Optimal gearing for spirited group rides and aggressive racing
The SHIMANO FC-RX610-2 balances weight savings and optimal efficiency for mixed-terrain riding and racing. Gearing options cater to the segmented demands of gravel cycling, maintaining the tighter gear steps needed to maintain your position in the bunch. The 2x12-speed crank utilizes a 46-30T chainring combination and comes in 165, 170, 172.5, and 175 mm crank arm lengths.
Features

Smaller gear steps for cadence control on mixed-terrain riding
Gravel-optimized gear ratios preserve riding rhythm on rough surfaces
Gear combination: 46-30T
Hollowtech crank arm

Technical Specifications

MODEL NO: FC-RX610-2
SERIES: GRX 12-speed
Rear speeds: 12
Compatible chain: HG 12-speed
Chain line (mm): 47
P.C.D. (mm): 110/80
Spider/gear arms: 4
Chainring combination: 46-30T
Q-factor (mm): 151
Crank arm length (mm): 172.5
Recommended bottom bracket|Threaded (normal): BB-RS501
Recommended bottom bracket|Press-Fit: BB-RS500-PB
Threaded bottom bracket shell width (mm): 68/70