Array of options delivers optimal gravel gearing for variety of needs

The SHIMANO FC-RX610-1 crank balances weight savings, optimized efficiency and an array of gearing options that cater to the segmented demands of mixed-terrain riding. By pairing a 10-45T or 10-51T cassette with 38T or 40T chainring, riders can choose closer gear steps or ultimate range depending on personal need. The FC-RX610-1 comes in 165, 170, 172.5, and 175 mm crank arm lengths, providing an additional level of customization.

FEATURES

Optimal gearing for mixed-terrain riding
10-45T and 10-51T cassette options serve array of riding styles
38T and 40T chainrings available

PRODUCT SPECIFICATIONS

MODEL NO FC-RX610-1
SERIES GRX 12-speed
Color Series color
Average weight 791 (38T) 812 (40T)
Rear speeds 12
Compatible chain HG 12-speed
Chain line (mm) 49.7
P.C.D. (mm) 110
Spider/gear arms 4
Chainring combination 38T, 40T
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