Optimal gearing for spirited group rides and aggressive racing
The SHIMANO FC-RX610-2 balances weight savings and optimized 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
PRODUCT SPECIFICATIONS
MODEL NO
FC-RX610-2
SERIES
GRX 12-speed
Color
Series color
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)|165
✔
Crank arm length (mm)|170
✔
Crank arm length (mm)|172.5
✔
Crank arm length (mm)|175
✔
Optional chain guard|Without chain/bash guard
✔
2-PIECE CRANKSET
✔
HOLLOWTECH crank arm
✔
Compatible bottom bracket type|Outboard
✔
Recommended bottom bracket|Threaded (normal)
BB-RS501
Recommended bottom bracket|Press-Fit
BB-RS500-PB
Threaded bottom bracket shell width (mm)|68
✔
Threaded bottom bracket shell width (mm)|70
✔
Crank fixing screw included
✔
Specifications
Size
46x30x165mm 12-Spd or
46x30x170mm 12-Spd or
46x30x172.5mm 12-Spd
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