Road and MTB Chainrings

R-DIMO3

for Boost

➤ Direct Mount
➤ (Narrow-Wide)
➤ Offset: 3mm
➤ Material: AL7075
➤ Teeth: 28^T, 30^T, 32^T, 34^T, 36^T
➤ Weight: 73g (32^T)

R-DIMO6

for Non-Boost

➤ Direct Mount
➤ (Narrow-Wide)
➤ Offset: 6mm
➤ Material: AL7075
➤ Teeth: 30^T, 32^T, 34^T, 36^T
➤ Weight: 85g (36^T)

R-DIMO

➤ Direct Mount
➤ (Narrow-Wide)
➤ Material: AL7075
➤ Teeth: 28^T, 30^T, 32^T, 34^T, 36^T
➤ Weight: 79g

RO-DIMO

Oval

➤ Direct Mount
➤ (Narrow-Wide)
➤ Material: AL7075
➤ Teeth: 32^T, 34^T, 36^T
➤ Weight: 79g

R-MXX

➤ BCD: 76mm
➤ (Narrow-Wide)
➤ Material: AL7075
➤ Teeth: 28^T, 30^T, 32^T, 34^T, 36^T
➤ Weight: 38g (28^T)

R-MXX2

➤ BCD: 94mm
➤ (Narrow-Wide)
➤ Material: AL7075
➤ Teeth: 30^T, 32^T, 34^T, 36^T, 38^T
➤ Weight: 70g (36^T)

RO-MXX2

Oval

➤ BCD: 94mm
➤ (Narrow-Wide)
➤ Material: AL7075
➤ Teeth: 32^T, 34^T, 36^T, 38^T
➤ Weight: 63g (34^T)

RM8000

➤ BCD: 96mm
➤ (Narrow-Wide)
➤ Material: AL7075
➤ Teeth: 30^T, 32^T, 34^T, 36^T, 38^T
➤ Weight: 62g (34^T)

RO-M8000

Oval

➤ BCD: 96mm
➤ (Narrow-Wide)
➤ Material: AL7075
➤ Teeth: 30^T, 32^T, 34^T, 36^T
➤ Weight: 64g (34^T)

R-DEOR

Symmetry

➤ BCD: 96mm
➤ (Narrow-Wide)
➤ Material: AL7075
➤ Teeth: 30^T, 32^T, 34^T, 36^T, 38^T
➤ Weight: 52g (32^T)

R-MH1

➤ BCD: 104mm
➤ (Narrow-Wide)
➤ Material: AL7075
➤ Teeth: 30^T, 32^T, 34^T, 36^T, 38^T,44^T ,46^T,48^T
➤ Weight: 41g (30^T)

R-NWO

Oval

➤ BCD: 104mm
➤ (Narrow-Wide)
➤ Material: AL7075
➤ Teeth: 32^T, 34^T, 36^T, 38^T
➤ Weight: 46g (32^T)

R-CT1

➤ BCD: 110mm
➤ (Narrow-Wide)
➤ Material: AL7075
➤ Teeth: 36^T, 38^T,40^T ,42^T
➤ Weight: 96g (42^T)

R-RT1

➤ BCD: 130mm
➤ (Narrow-Wide Version Available)
➤ Material: AL7075
➤ Teeth: 39^T, 40^T, 42^T, 44^T, 46^T, 48^T, 50^T, 52^T
➤ Weight: 65g (46^T)

R-DT1

➤ BCD: 130mm
➤ Material: AL5182
➤ Teeth: 39^T, 40^T, 42^T, 44^T, 46^T, 48^T, 50^T, 52^T
➤ Weight: 72g (44^T)

R-OT

Oval

➤ BCD: 130mm
➤ Material: AL7075
➤ Teeth: 52^T
➤ Weight: 155g

R-DT2

Light

➤ BCD: 144mm
➤ Material: AL7075
➤ Teeth: 47^T, 48^T, 49^T, 50^T, 51^T, 52^T
➤ Weight: 148g (50^T)

R-DT2

➤ BCD: 144mm
➤ Material: AL7075
➤ Teeth: 47^T, 48^T, 49^T, 50^T, 51^T, 52^T
➤ Weight: 162g (48^T)

Road Chain Guard

➤ BCD: 130mm
➤ Material: AL5182
➤ Teeth: 39^T, 40^T, 42^T, 44^T, 46^T, 48^T, 50^T, 52^T
➤ Weight: 40g (46^T)

MTB Chain Guard

➤ BCD: 104mm
➤ Material: AL5182
➤ Teeth: 34^T, 36^T, 38^T, 40^T, 42^T, 44^T
➤ Weight: 75g (44^T)

R-GTm

➤ BCD: 130/74mm
➤ Material: AL7075
➤ Teeth: 48^Tx32^T, 46^Tx36^T, 46^Tx30^T
➤ Weight: 145g (46^Tx30^T)

R-KT

➤ BCD: 110mm
➤ Material: AL7075
➤ Teeth: 53^Tx39^T, 52^Tx38^T, 52^Tx36^T, 50^Tx34^T
➤ Weight: 188g (53^Tx39^T)

R-CT

➤ BCD: 110mm
➤ Material: AL7075
➤ Teeth: 50^Tx34^T
➤ Weight: 158g

R-OS

Semi-Oval

➤ BCD: 130mm
➤ Material: AL7075
➤ Teeth: 53^Tx39^T
➤ Weight: 198g

R-OS1

Semi-Oval

➤ BCD: 110mm
➤ Material: AL7075
➤ Teeth: 50^Tx34^T
➤ Weight: 147g

R-RT/R-DT

➤ BCD: 130mm
➤ Material: AL7075
➤ Teeth: 53^Tx39^T
➤ Weight: 138g

R-OR

Oval

➤ BCD: 130mm
➤ Material: AL7075
➤ Teeth: 53^Tx40^T
➤ Weight: 200g

R-OC

Oval

➤ BCD: 110mm
➤ Material: AL7075
➤ Teeth: 50^Tx35^T
➤ Weight: 188g

R-CAMP

Campy

➤ BCD: 145/112mm
➤ Material: AL7075
➤ Teeth: 53^Tx39^T, 52^Tx38^T, 52^Tx36^T, 50^Tx34^T
➤ Weight: 170g (53^Tx39^T)

R-MH/R-MP

➤ BCD: 104/64mm
➤ Material: AL7075
➤ Teeth: 36^Tx22^T, 38^Tx24^T, 40^Tx27^T, 40^Tx28^T
➤ Weight: 74g (36^Tx22^T)

R-MS/R-MT

➤ BCD: 104/64mm
➤ Material: AL7075
➤ Teeth: 44^Tx32^Tx22^T, 42^Tx32^Tx22T
➤ Weight: 149g (44^Tx32^Tx22^T)

R-ET

➤ BCD: 130/74mm
➤ Material: AL7075
➤ Teeth: 52^Tx39^Tx30^T, 50^Tx39^Tx30^T,
➤ Weight: 202g (52^Tx39^Tx30^T)

First's Main Pages

Bottom Brackets
Headsets
Cranksets

2019 NEW PRODUCTS

28.99 BB TOOL

Road and MTB Chainrings

First's Main Pages

Got a Question? Get in Touch

COMPANY

SUPPORT

LEGAL

Follow Us