{"id":8232,"date":"2020-11-09T11:00:40","date_gmt":"2020-11-09T11:00:40","guid":{"rendered":"https:\/\/www.firstcomponents.com\/?p=8232"},"modified":"2023-02-09T05:13:02","modified_gmt":"2023-02-09T05:13:02","slug":"mtb-headset","status":"publish","type":"post","link":"https:\/\/www.firstcomponents.com\/de\/mtb-headset\/","title":{"rendered":"MTB Headset: Install, Remove, Replace (Simple, Comprehensive)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Welcome to <strong>the most detailed guide to the modern mtb headset<\/strong> available online\u2014or offline.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You\u2019ll:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Learn how an MTB headset works<\/li>\n\n\n\n<li>Understand the various <strong>MTB headset parts<\/strong><\/li>\n\n\n\n<li>Learn how to Disassemble, Assemble, and <strong>Adjust<\/strong> an MTB Headset<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>CONTENTS<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"#howhsetwork\" class=\"rank-math-link\">How Does an MTB Headset Work?<\/a><br><a href=\"#mtbhsparts\" class=\"rank-math-link\">MTB Headset Parts \u2014 What&#8217;s inside?<\/a><br><a href=\"#remrephs\" class=\"rank-math-link\">Remove, Replace, Install MTB Headset<\/a><br><a href=\"#hsetools\" class=\"rank-math-link\">Headset Tools<\/a><br><a href=\"#looseheset\" class=\"rank-math-link\">Why is My Headset Loose?<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"howhsetwork\"><strong>HOW DOES AN MTB HEADSET WORK?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It allows your front \u2018end\u2019 ie. handlebars, fork and wheel to turn to the right or left.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But, <strong>did you know that you actually turn left by first turning right?!<\/strong> And turn right by first turning left\u2026<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Yes. It\u2019s due to a phenomenon we call&nbsp;<em>counter steering<\/em>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A bicycle in motion is directly perpendicular to the road or trail it\u2019s moving on.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Turning left or right is not a matter of simply cranking the <a href=\"https:\/\/www.firstcomponents.com\/bike-handlebar-types\/\" target=\"_blank\" aria-label=\"handlebars (opens in a new tab)\" rel=\"noreferrer noopener\" class=\"rank-math-link\">handlebars<\/a> to the left, to veer left, or to the right, to veer right.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.leelikesbikes.com\/wp-content\/101105countersteering.jpg\" alt=\"\"\/><figcaption class=\"wp-element-caption\">Embedded from&nbsp;<a href=\"https:\/\/www.leelikesbikes.com\/\" target=\"_blank\" rel=\"noopener\">leelikesbikes.com<\/a><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Your bike must first be knocked out of its perpendicular alignment with the road.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You do that by very slightly turning the handlebar in the opposite direction to the intended turn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You\u2019ll only notice you are doing this whenever you turn by paying close attention as you go through the motion\u2014easier on the road; almost impossible on the trail.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Of course, the device that makes counter steering possible and gets you heading in the right (or left\u2026) direction is your headset.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"mtbhsparts\"><strong>MTB HEADSET PARTS<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Modern mtb headsets are known as&nbsp;<em>integrated<\/em>&nbsp;headsets.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Integrated means that the headset bearings sit within containers built into your mountain bike frame\u2019s head tube.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/sealed-bearing-cup-1024x576.jpg\" alt=\"threaded headset top cup in head tube\" class=\"wp-image-6477\" width=\"768\" height=\"432\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/sealed-bearing-cup-1024x576.jpg 1024w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/sealed-bearing-cup-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/sealed-bearing-cup-768x432.jpg 768w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/sealed-bearing-cup-1536x864.jpg 1536w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/sealed-bearing-cup.jpg 1920w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption class=\"wp-element-caption\">Threaded Headset Bearing Cup<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Before integrated mtb headsets came along, we had to press cups into the head tube to hold the bearings.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/using-headset-cup-press-tool.jpg\" alt=\"placing headset cup press tool in head tube\" class=\"wp-image-6491\" width=\"705\" height=\"608\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/using-headset-cup-press-tool.jpg 940w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/using-headset-cup-press-tool-300x259.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/using-headset-cup-press-tool-768x662.jpg 768w\" sizes=\"(max-width: 705px) 100vw, 705px\" \/><figcaption class=\"wp-element-caption\">Installing Bearing Cups into the Head Tube for a Threaded Headset<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">And that required a specialized tool called a headset press.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Having to use this tool made a simple job into an unnecessarily complex one.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>An integrated headset takes away the complexity.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">An integrated mtb headset consists of 8 parts: six pieces slide down over, around and into the fork from above; two pieces sit between the fork crown and the bottom of the head tube.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I\u2019ll go through the list of items in the reverse order of installation (I cover installation in detail below).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. Top cap<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">An mtb headset\u2019s top cap works together with the compression bolt that compacts the headset into a functioning unit.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"640\" height=\"345\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/top-cap-compression-bolt.jpg\" alt=\"Top Cap Compression Bolt Cap and Bung\" class=\"wp-image-8251\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/top-cap-compression-bolt.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/top-cap-compression-bolt-300x162.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/top-cap-compression-bolt-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">MTB Headset Bung, Compression Bolt, and  Top Cap<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The compression bolt slides through the center to screw into the star nut or expander\u2019s threads.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The rubber bung slots into the bolt\u2019s hexagonal head aesthetically integrating the bolt with the top cap.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The top cap sits flush on top of the stem, the curved inside edge bracing against the top of the stem but arcing down into the steerer which is cut to within 3mm (ideally) of the top of the stem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That 3mm allows the top cap to snug down into the stem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If the steerer projects any higher, the top cap presses against it, preventing the required tight seal against the stem resulting in a loose headset.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/top-cap-closeup.jpg\" alt=\"Closeup of MTB Headset Topcap\" class=\"wp-image-8250\" width=\"640\" height=\"385\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/top-cap-closeup.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/top-cap-closeup-300x180.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/top-cap-closeup-16x10.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">MTB Headset Topcap<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The groove along the circumference fits around the top of the stem with the cone projecting down into the space between stem and steerer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. Star Nut or Expander<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Star nuts and expanders provide the anchor for the compression bolt, enabling a headset to be tightened.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Star Nut<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The star nut\u2014also known as the star \u201cfangled\u201d nut\u2014is tapped down into a steel or alloy steerer with a special tool and hammer.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"605\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/star-fangled-nut.jpg\" alt=\"Star Fangled Nut for MTB Headset\" class=\"wp-image-8247\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/star-fangled-nut.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/star-fangled-nut-300x284.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/star-fangled-nut-13x12.jpg 13w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The nut\u2019s flanges lock against the inside walls of the steerer, forming an anchor for the compression bolt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tightening the compression bolt into the nut\u2019s center threads compacts the headset, pulling the fork to the stem.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/star-nut-on-setter.jpg\" alt=\"Star Nut installed to the pin of a star nut setter\" class=\"wp-image-8248\" width=\"640\" height=\"484\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/star-nut-on-setter.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/star-nut-on-setter-300x227.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/star-nut-on-setter-16x12.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">Star Nut Installed onto a Star Nut Setter Installation Pin<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Installing the star nut to the right depth and straight inside the steerer requires a star-nut setting tool.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For the model above, the star nut slots over a guide rod. The lower part is encased in a sleeve (not pictured) which sets the depth by fitting over the steerer.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"365\" height=\"640\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/park-tool-tns-4-threadless-tubed-nut-setter-122-1-1822-forks.jpg\" alt=\"Park Tool TNS-4 Threadless Tubed Nut Setter 1 - 1 1\/8&quot;  Forks\" class=\"wp-image-8246\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/park-tool-tns-4-threadless-tubed-nut-setter-122-1-1822-forks.jpg 365w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/park-tool-tns-4-threadless-tubed-nut-setter-122-1-1822-forks-171x300.jpg 171w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/park-tool-tns-4-threadless-tubed-nut-setter-122-1-1822-forks-7x12.jpg 7w\" sizes=\"(max-width: 365px) 100vw, 365px\" \/><figcaption class=\"wp-element-caption\">A Well-worn Often Used Park Tool Deluxe Start Nut Setter<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You drive a star nut into position by hammering the tool\u2019s impact surface, which needs to be made of hardened steel for obvious reasons.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This Park Tool model has not stood up to continual use well\u2014the impact surface is too soft and has compressed, then splintered. Not the best shop tool for this job.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Expander<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/headset-expander-threads.jpg\" alt=\"Top view of headset expander\" class=\"wp-image-8242\" width=\"640\" height=\"613\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/headset-expander-threads.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/headset-expander-threads-300x287.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/headset-expander-threads-13x12.jpg 13w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">Note the Hexagon for a 6mm Allen Wrench Above the Compression Bolt Threads<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">An expander is for use on a carbon fork that has a carbon steerer since a star nut would<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>tear up the steerer<\/li>\n\n\n\n<li>force it outwards in a bulge preventing the stem from slipping into place at the top of the steerer<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/expander-stem-gap-1024x576.jpg\" alt=\"Expander Stem Gap\" class=\"wp-image-6266\" width=\"768\" height=\"432\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/expander-stem-gap-1024x576.jpg 1024w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/expander-stem-gap-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/expander-stem-gap-768x432.jpg 768w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/expander-stem-gap.jpg 1920w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption class=\"wp-element-caption\">Note the Gap Between the Top of the Expander and the Top of the Stem<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Expanders install by slipping inside the top of the steerer. The top of the expander projects above the steer, requiring an extra millimeter or so to be cut off compared with a steel or alloy steerer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A 6mm Allen wrench fits into the top of the compression bolt hole.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"451\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/headset-expander.jpg\" alt=\"Headset expander fully expanded\" class=\"wp-image-8243\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/headset-expander.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/headset-expander-300x211.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/headset-expander-16x12.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Turning it slowly forces the cross-hatched plates into the carbon steerer. The sweet spot is just before the steerer begins to bulge under the pressure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. Dust Cap<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The dust cap prevents water entering the top bearing by sealing everything below it.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"508\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/dust-cap-seal.jpg\" alt=\"Mtb headset dust cap with sealing gasket\" class=\"wp-image-8241\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/dust-cap-seal.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/dust-cap-seal-300x238.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/dust-cap-seal-16x12.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">The Rubber Seal Fits Inside the Inside Edge<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Top caps vary in size and shape according to the design, but all have a rubber gasket which fits over the spacer, compression ring and top bearing, an effective seal which keeps out most of the dirt.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. &amp; 5. Spacer and Compression Ring<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">0.1mm thick spacer sits on top of the compression ring.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"435\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/mtb-headset-washer.jpg\" alt=\"Mtb Headset Washer\/Spacer\" class=\"wp-image-8245\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/mtb-headset-washer.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/mtb-headset-washer-300x204.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/mtb-headset-washer-16x12.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This wafer-thin spacer is easily damaged and must be handled with extra care.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"392\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/compression-ring-details.jpg\" alt=\"Headset compression ring\" class=\"wp-image-8238\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/compression-ring-details.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/compression-ring-details-300x184.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/compression-ring-details-16x10.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The compression ring slots into the top of the sealed bearing, the main function being to position the steerer exactly in the center.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Like a spring washer, it very slightly compresses around the stem as you seat it in the bevelled edge of the sealed bearing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>6. &amp; 7. Upper &amp; Lower Sealed Bearings<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The sealed bearings are mirror images of each other; one sits in the top of the head tube; the other sits up inside the bottom.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"294\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/mtb-headset-sealed-bearings.jpg\" alt=\"Mtb Headset Sealed Bearings\" class=\"wp-image-8244\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/mtb-headset-sealed-bearings.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/mtb-headset-sealed-bearings-300x138.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/mtb-headset-sealed-bearings-16x7.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The bearing on the left shows the position the upper bearing\u2019s position. Its lower bevelled edge sits in the head tube\u2019s flange designed to receive it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The lower bearing\u2019s (right) inner bevelled edge fits against the crown race.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>8. Crown Race<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cFork\u201d crown race to be exact.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"506\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/crown-race-underneath.jpg\" alt=\"View of the upward-facing part of a crown race\" class=\"wp-image-8240\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/crown-race-underneath.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/crown-race-underneath-300x237.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2020\/11\/crown-race-underneath-16x12.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">The Sealed Bearing&#8217;s Inner Race Fits Over the Inside Edge<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The race sits as illustrated in the image on the fork crown. The inside bevelled edge of the sealed bearing slots against it on top.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Opposite to the compression ring, the race expands around the section where the steerer enters the fork, as you push it down onto the fork crown.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"remrephs\"><strong>REMOVE, REPLACE, OR INSTALL MTB HEADSET<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because mtb headsets are&nbsp;<em>integrated<\/em>&nbsp;headsets, they are easy to install and remove.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In this section I show you what tools to use along with effective techniques.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Integrated Headset (&amp; Bearing) Replacement - Mountain mtb or Road Bike\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/yJq_6oZEK2w?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Or check out the video which covers everything in detail.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"hsetools\"><strong>MTB Headset Tools<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The only tools you need are a set of Allen wrenches and an awl or a small flat-headed screwdriver. (A torque wrench is a great investment all the same.)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Allen wrenches are the most useful tools for any bike component installation maintenance, or removal.<br><br>So you\u2019ll use a set for much more than just your headset.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"633\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/allen-wrench-9pc-set.jpg\" alt=\"Allen Wrench 9pc Set\" class=\"wp-image-8194\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/allen-wrench-9pc-set.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/allen-wrench-9pc-set-300x297.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/allen-wrench-9pc-set-12x12.jpg 12w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">An L-shaped set ranging from 2mm to 10mm will do the job, providing good leverage and a hex head at both ends.<br><br>German or Japanese branded sets are best\u2014 they&#8217;re harder, meaning the hexagonal edges don\u2019t blunt or \u2018smear\u2019 with use.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"598\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/allen-wrench-set-1.jpg\" alt=\"Allen Wrench Set with Handles\" class=\"wp-image-8195\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/allen-wrench-set-1.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/allen-wrench-set-1-300x280.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/allen-wrench-set-1-13x12.jpg 13w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The best Allen wrench set has a handle which improves your grip and the amount of leverage you can bring to bear.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Although you won\u2019t need a lot of leverage when working with headsets, those handles will come in handy when faced with more difficult bolts, and bolts that require a lot more torque.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Remove Peripherals from the MTB Fork<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Changing a headset means the fork must be removed.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/remote-speed-lock-out.jpg\" alt=\"Remote Speed Lock Out removal\" class=\"wp-image-8216\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/remote-speed-lock-out.jpg 800w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/remote-speed-lock-out-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/remote-speed-lock-out-768x432.jpg 768w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/remote-speed-lock-out-16x9.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">So firstly remove all attachments such as a&nbsp;<em>remote speed lock out<\/em>&nbsp;if installed.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"495\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/shimano-disk-brake-bolt.jpg\" alt=\"Removing Shimano Disk Brake Bolts from Fork\" class=\"wp-image-8221\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/shimano-disk-brake-bolt.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/shimano-disk-brake-bolt-300x232.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/shimano-disk-brake-bolt-16x12.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Also loosen then remove the disk brake caliper bolts with a 5mm Allen wrench.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Since they are still attached to the bike by cable or hydraulic hose, wrap these items up and even zip-tie them to the frame to prevent them swinging about and impacting the fork or the down tube (especially important if you have a carbon frame) when you are removing and re-installing the fork.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Removing the 3 Main Bolts<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The three main bolts are: 1. the compression bolt 2. the left stem bolt 3. the right stem bolt.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/loosen-stem-bolt.jpg\" alt=\"Loosening Stem Bolt\" class=\"wp-image-8204\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/loosen-stem-bolt.jpg 800w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/loosen-stem-bolt-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/loosen-stem-bolt-768x432.jpg 768w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/loosen-stem-bolt-16x9.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Loosen the Stem Bolt on Each Side Little By Little<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Loosen each of the stem bolts a little in turn, taking turns. Here I\u2019m loosening the left.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/tighten-stem-bolt.jpg\" alt=\"Loosening Right Stem Bolt\" class=\"wp-image-8225\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/tighten-stem-bolt.jpg 800w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/tighten-stem-bolt-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/tighten-stem-bolt-768x432.jpg 768w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/tighten-stem-bolt-16x9.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Now to loosen the right stem bolt. Screw them out a fair distance, without removing them completely.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/remove-rubber-bung.jpg\" alt=\"Remove Top Cap Rubber Bung\" class=\"wp-image-8217\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/remove-rubber-bung.jpg 800w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/remove-rubber-bung-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/remove-rubber-bung-768x432.jpg 768w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/remove-rubber-bung-16x9.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Remove the top cap rubber bung.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"414\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/loosen-tensioner-bolt.jpg\" alt=\"Loosening Compression Bolt\" class=\"wp-image-8205\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/loosen-tensioner-bolt.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/loosen-tensioner-bolt-300x194.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/loosen-tensioner-bolt-16x10.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Then unscrew the compression bolt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Important!<\/strong>\u2014support the fork from below.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Although the stem bolts do the main job of securing the fork (via the steerer) to the stem, the compression bolt is the one that initially pulls it all together.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"501\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/fork-removal-technique.jpg\" alt=\"Fork Removal Technique; Support the Fork\" class=\"wp-image-8199\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/fork-removal-technique.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/fork-removal-technique-300x235.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/fork-removal-technique-16x12.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Note the technique<\/strong>: supporting the fork in the left hand and working on the rest with the right (or vice versa if you are left-handed).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Having put the compression bolt and top cap to one side, slide the stem and handlebars off the steerer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">They are still connected to the bike through the brake and derailleur cables, but it\u2019s perfectly ok to let the handlebars dangle next to the bike. Just ensure they don\u2019t bang into the frame though.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Carbon or alloy stems tend to stick more to carbon steerers, but slide more easily against alloy steerers.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Removing Dust Cap, Spacer, &amp; Compression Ring<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"893\" height=\"565\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-dust-cap-removal.jpg\" alt=\"Mtb Headset Dust Cap Removal\" class=\"wp-image-8210\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-dust-cap-removal.jpg 893w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-dust-cap-removal-300x190.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-dust-cap-removal-768x486.jpg 768w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-dust-cap-removal-16x10.jpg 16w\" sizes=\"(max-width: 893px) 100vw, 893px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Dust caps fit snugly around steerers, so you\u2019ll have to twist firstly one way, then the other as you work the cap up to the top of the steerer\u2014spacer and compression ring slide off easily.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"483\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/steerer-star-nut-bearing.jpg\" alt=\"Steerer Star Nut Bearing\" class=\"wp-image-8222\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/steerer-star-nut-bearing.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/steerer-star-nut-bearing-300x226.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/steerer-star-nut-bearing-16x12.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Slide the steerer out of the head tube, leaving the sealed bearing in position for now.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/removing-mtb-fork.jpg\" alt=\"Removing Mtb Fork\" class=\"wp-image-8218\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/removing-mtb-fork.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/removing-mtb-fork-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/removing-mtb-fork-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Continue to keep the handlebars clear of the down tube to avoid frame damage. Place the fork on your work bench.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"555\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/removing-mtb-headset-bearing.jpg\" alt=\"Lifting out Mtb Headset Bearing\" class=\"wp-image-8219\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/removing-mtb-headset-bearing.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/removing-mtb-headset-bearing-300x260.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/removing-mtb-headset-bearing-14x12.jpg 14w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Now lift out the sealed bearing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>New MTB Headset<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"573\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-package.jpg\" alt=\"Mtb Headset Package\" class=\"wp-image-8212\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-package.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-package-300x269.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-package-13x12.jpg 13w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">New mountain bike headsets should come wrapped in plastic to protect dust getting into the parts prior to installation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The star nut is screwed onto the compression bolt and pushed down into the unit; unscrew it and store away, unless you are installing a new fork without the star nut installed.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"258\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-parts.jpg\" alt=\"Mtb Headset Parts\" class=\"wp-image-8213\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-parts.jpg 800w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-parts-300x97.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-parts-768x248.jpg 768w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-parts-16x5.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Lay out all parts in the order of assembly beginning with the crown race, No. 7.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Crown Race and Bearing<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-crown-race.jpg\" alt=\"Prising loose Mtb Headset Crown Race\" class=\"wp-image-8209\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-crown-race.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-crown-race-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-crown-race-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Use an awl or a small flat-headed screwdriver to prise the old crown race away from the bottom of the steerer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Or leave it in place if it\u2019s not corroded or otherwise in good condition.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"617\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/installing-crown-race-fork.jpg\" alt=\"Installing Crown Race onto Fork\" class=\"wp-image-8203\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/installing-crown-race-fork.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/installing-crown-race-fork-300x289.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/installing-crown-race-fork-12x12.jpg 12w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The new crown race is easily positioned with light finger pressure\u2014you\u2019ll experience a little resistance as the ring expands around the steerer base.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It often \u201cclicks\u201d home or you\u2019ll simply see it snug down onto the fork crown.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/sealed-bearing-inner-race.jpg\" alt=\"Sealed Bearing Inner Race\" class=\"wp-image-8220\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/sealed-bearing-inner-race.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/sealed-bearing-inner-race-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/sealed-bearing-inner-race-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The inside bevelled edge of the lower sealed bearing is designed to slot exactly into the crown race\u2019s similarly bevelled inner race.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/crown-race-bearing-interface.jpg\" alt=\"Crown Race Bearing Surface\" class=\"wp-image-8197\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/crown-race-bearing-interface.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/crown-race-bearing-interface-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/crown-race-bearing-interface-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The bearing slides down.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/crown-race-bearing-installed.jpg\" alt=\"Crown Race Bearing Installed\" class=\"wp-image-8196\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/crown-race-bearing-installed.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/crown-race-bearing-installed-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/crown-race-bearing-installed-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You\u2019ll note a small gap between the race and the bearing as the bearing\u2019s inner race sits against the bevelled edge of the race.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/crown-race-bearing-surface.jpg\" alt=\"Crown Race Bearing Surface\" class=\"wp-image-8198\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/crown-race-bearing-surface.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/crown-race-bearing-surface-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/crown-race-bearing-surface-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The bearing\u2019s bevelled outer race slots into the head tube\u2019s lower flange when the fork is re-installed into the head tube.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/head-tube-bearing-flange.jpg\" alt=\"Head Tube Bearing Flange\" class=\"wp-image-8202\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/head-tube-bearing-flange.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/head-tube-bearing-flange-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/head-tube-bearing-flange-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">And the upper sealed bearing slots into the top of the head tube in the same way.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/grease-head-tube.jpg\" alt=\"Greasing lower part of Head Tube to take the sealed bearing\" class=\"wp-image-8201\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/grease-head-tube.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/grease-head-tube-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/grease-head-tube-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Smear grease inside the lower section to prevent direct alloy-on-alloy contact which may be the source of creaking in the future.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/grease-head-tube-top.jpg\" alt=\"Greasing the Head Tube Top\" class=\"wp-image-8200\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/grease-head-tube-top.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/grease-head-tube-top-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/grease-head-tube-top-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">And inside the upper section.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Upper Assembly<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"359\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-upper-parts.jpg\" alt=\"Mtb Headset Upper Parts\" class=\"wp-image-8215\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-upper-parts.jpg 800w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-upper-parts-300x135.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-upper-parts-768x345.jpg 768w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-upper-parts-16x7.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You are now left with the upper assembly: compression ring, spacer, dust cap, and top cap.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"350\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-compression-ring.jpg\" alt=\"Mtb Headset Compression Ring\" class=\"wp-image-8208\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-compression-ring.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-compression-ring-300x164.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-compression-ring-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Having greased the head tube and sealed bearing\u2019s bevelled edge, drop the bearing into position, slide the fork back into the head tube, then slide the compression ring down as close as you can to the bearing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The compression ring often won\u2019t snap neatly into position since the steerer is still able to move from side to side. Not a problem\u2014keep going.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-dust-cap.jpg\" alt=\"Installing Mtb Headset Dust Cap\" class=\"wp-image-8211\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-dust-cap.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-dust-cap-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-dust-cap-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Slip the spacer on top followed by the dust cap.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As you push the dust cap down into position, push up on the fork from the bottom.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The dust cap\u2019s grip on the steerer will generally hold everything in position. But keep an eye on the fork to see whether it slowly slides back towards the floor once you have let go.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Tightening the 3 Bolts<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-compression-bolt.jpg\" alt=\"Mtb Headset Compression Bolt\" class=\"wp-image-8207\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-compression-bolt.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-compression-bolt-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-compression-bolt-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Slot the stem into position on the steerer.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-top-cap-installed.jpg\" alt=\"Mtb Headset Top Cap Installed\" class=\"wp-image-8214\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-top-cap-installed.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-top-cap-installed-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-top-cap-installed-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Then screw the lightly greased stem bolt with the top cap all the way in.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>How Tight Should an MTB Headset Be?<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The function of the compression bolt is to pull each component in the headset together so there is no play or movement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Important<\/strong>! Not much tension is needed to achieve this.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">No more than 2Nm of tension should eliminate any play. (I\u2019ll go into detail about what to do if there&nbsp;<em>still<\/em>&nbsp;is play, below.)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You\u2019ll know it\u2019s too tight if the steering is stiff. That is, the steering sticks in one position with the front wheel off the ground.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There should be:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>no play<\/li>\n\n\n\n<li>the forks should turn left and right with ease.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Once the tension is dialed-in, it&#8217;s time to firm up the stem bolts.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Tightening the Stem Bolts<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/align-front-wheel.jpg\" alt=\"Front Wheel is Out of Alignment with the stem\" class=\"wp-image-8193\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/align-front-wheel.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/align-front-wheel-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/align-front-wheel-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Whenever you loosen the stem bolts, the front wheel and handlebars easily twist out of alignment.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-alignment.jpg\" alt=\"Mtb Headset Alignment - stem with front wheel\" class=\"wp-image-8206\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-alignment.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-alignment-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/mtb-headset-alignment-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Line up the stem with the front wheel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There is&nbsp;<a href=\"https:\/\/www.dnrdesignsllp.com\/shop\" target=\"_blank\" rel=\"noopener\">a tool you can use to get the alignment exactly right<\/a>. But aligning the stem with the front wheel to within a millimeter or two is not difficult; just takes a good eye.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Take a line of sight, then lightly tap or push the handlebars to the left or right.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/tighten-stem-bolts.jpg\" alt=\"Tightening Stem Bolts\" class=\"wp-image-8226\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/tighten-stem-bolts.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/tighten-stem-bolts-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/tighten-stem-bolts-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Once aligned, quickly tighten the left or right stem bolt with an Allen wrench, enough to hold the alignment before you tighten any further.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Then tighten each side a little in turn, enough to get the bolts reasonably tight.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-wrenches.jpg\" alt=\"Mechanical and Electronic torque wrenches\" class=\"wp-image-8231\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-wrenches.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-wrenches-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-wrenches-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Finishing the job off properly requires tightening to the correct torque.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Affordable torque wrenches are available on Amazon:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Avoid the model on the far right\u2014the calibration scale is too hard to read.<\/li>\n\n\n\n<li>The center unit is electronic\u2014it is prone to malfunction and eats batteries<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The one on the left is the most practical with its pinpoint accurate calibration system.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/stem-bolt-torque.jpg\" alt=\"Torque setting calibration printed on bike stem\" class=\"wp-image-8223\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/stem-bolt-torque.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/stem-bolt-torque-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/stem-bolt-torque-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The recommended torque setting for the stem bolts is often printed on the stem.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-wrench-setting-1.jpg\" alt=\"Torque Wrench Setting\" class=\"wp-image-8229\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-wrench-setting-1.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-wrench-setting-1-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-wrench-setting-1-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">If not, then 8-9Nm is a safe setting.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-wrench-stem-bolt.jpg\" alt=\"Using Torque Wrench to tighten Stem Bolt\" class=\"wp-image-8230\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-wrench-stem-bolt.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-wrench-stem-bolt-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-wrench-stem-bolt-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The technique for reaching correct torque is to tighten each side a little, one turn at a time.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-setting-right-bolt.jpg\" alt=\"Torque Setting Right Stem Bolt\" class=\"wp-image-8228\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-setting-right-bolt.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-setting-right-bolt-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/torque-setting-right-bolt-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Once the wrench \u201cclicks\u201d, indicating torque is reached, continue to the other side, and then double check that each side has actually reached the correct tolerance by continuing to tighten (when you tighten one side, reaching torque, the other side usually regresses a little, requiring an extra turn or two to bring it back to tolerance).<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/top-cap-bung.jpg\" alt=\"Top Cap Bung\" class=\"wp-image-8227\" srcset=\"https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/top-cap-bung.jpg 640w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/top-cap-bung-300x169.jpg 300w, https:\/\/www.firstcomponents.com\/wp-content\/uploads\/2018\/10\/top-cap-bung-16x9.jpg 16w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Finally press the rubber bung into place.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"looseheset\"><strong>WHY IS MY HEADSET LOOSE?\u2014How to Fix It<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A loose headset means the compression bolt is not keeping the headset together.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The headset spacers can be easily turned with your fingers and the whole front end will feel sloppy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Loose headsets are rare, though, and any looseness is usually due to incorrect installation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Remember that the steerer must be cut 3-5mm clear of the top of the stem (3mm for alloy steerers, 5mm for carbon steerers as a rule of thumb) so the top cap is not prevented from tightening onto the stem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When you tighten the compression bolt, the tension of the top cap against the top of the stem firms up the whole headset assemblage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If that gap is 2mm or less, the steerer prevents the top cap from making a firm connection to the stem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The tell-tale sign is when the compression does not gradually tighten, but rather suddenly seizes. A bike assembly professional worth his or her salt will notice this.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You\u2019ll also notice that any spacers between the bottom of the stem and the dust cap can be turned to the left or right because they are not firmed up against each other or, in the case of one spacer, against the stem at the top and the dust cap at the bottom.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The fix is to remove the fork and recut an extra 1-3mm off the steerer which allows the top cap to sit snugly inside the top of the stem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:30px\"><strong>FINAL COMMENTS<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Armed with the knowledge gained here, you can now make sure your mtb headset stays in perfect condition.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You now know every working component in your headset, how to get access to it and replace anything that needs replacing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The part most likely to need replacing is one of the sealed bearings. The seals can be removed, the bearing degreased, cleaned, re-greased and the seal replaced.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Or simply swap the sealed bearing for a new one easily obtained online.<\/p>\n<span hidden class=\"__iawmlf-post-loop-links\" data-iawmlf-links=\"[{&quot;id&quot;:204,&quot;href&quot;:&quot;https:\\\/\\\/www.leelikesbikes.com&quot;,&quot;archived_href&quot;:&quot;https:\\\/\\\/web-wp.archive.org\\\/web\\\/20251116190514\\\/https:\\\/\\\/leelikesbikes.com\\\/&quot;,&quot;redirect_href&quot;:&quot;&quot;,&quot;checks&quot;:[{&quot;date&quot;:&quot;2026-10-29 01:11:04&quot;,&quot;http_code&quot;:202},{&quot;date&quot;:&quot;2026-11-01 01:59:13&quot;,&quot;http_code&quot;:202},{&quot;date&quot;:&quot;2026-11-04 08:51:22&quot;,&quot;http_code&quot;:200}],&quot;broken&quot;:false,&quot;last_checked&quot;:{&quot;date&quot;:&quot;2026-11-04T08:51:22+00:00&quot;,&quot;http_code&quot;:200},&quot;process&quot;:&quot;done&quot;},{&quot;id&quot;:205,&quot;href&quot;:&quot;https:\\\/\\\/www.dnrdesignsllp.com\\\/shop&quot;,&quot;archived_href&quot;:&quot;https:\\\/\\\/web-wp.archive.org\\\/web\\\/20260120020854\\\/https:\\\/\\\/www.dnrdesignsllp.com\\\/shop&quot;,&quot;redirect_href&quot;:&quot;&quot;,&quot;checks&quot;:[{&quot;date&quot;:&quot;2026-10-27 14:02:23&quot;,&quot;http_code&quot;:200},{&quot;date&quot;:&quot;2026-10-30 23:08:03&quot;,&quot;http_code&quot;:200},{&quot;date&quot;:&quot;2026-11-02 23:54:11&quot;,&quot;http_code&quot;:200}],&quot;broken&quot;:false,&quot;last_checked&quot;:{&quot;date&quot;:&quot;2026-11-02T23:54:11+00:00&quot;,&quot;http_code&quot;:200},&quot;process&quot;:&quot;done&quot;}]\"><\/span>","protected":false},"excerpt":{"rendered":"<p>Welcome to the most detailed guide to the modern mtb headset available online\u2014or offline. You\u2019ll: CONTENTS How Does an MTB Headset Work?MTB Headset Parts \u2014 What&#8217;s inside?Remove, Replace, Install MTB HeadsetHeadset ToolsWhy is My Headset Loose? HOW DOES AN MTB HEADSET WORK? It allows your front \u2018end\u2019 ie. handlebars, fork and wheel to turn to [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":8271,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[145],"tags":[],"class_list":["post-8232","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-headsets"],"_links":{"self":[{"href":"https:\/\/www.firstcomponents.com\/de\/wp-json\/wp\/v2\/posts\/8232","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.firstcomponents.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.firstcomponents.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.firstcomponents.com\/de\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.firstcomponents.com\/de\/wp-json\/wp\/v2\/comments?post=8232"}],"version-history":[{"count":0,"href":"https:\/\/www.firstcomponents.com\/de\/wp-json\/wp\/v2\/posts\/8232\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.firstcomponents.com\/de\/wp-json\/wp\/v2\/media\/8271"}],"wp:attachment":[{"href":"https:\/\/www.firstcomponents.com\/de\/wp-json\/wp\/v2\/media?parent=8232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.firstcomponents.com\/de\/wp-json\/wp\/v2\/categories?post=8232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.firstcomponents.com\/de\/wp-json\/wp\/v2\/tags?post=8232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}