Shimano Black Shimano GRX RX610 38T crankset 2025

Crankset. Chainring combination: 38T. Crank arm length: 172.5 mm. 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.
Rear speeds: 12
Compatible chain: HG 12-speed
Chain line: 49.7 mm
P.C.D.: 110 mm
Spider/gear arms: 4
Q-factor: 151 mm
2-PIECE CRANKSET
HOLLOWTECH crank arm
Recommended bottom bracket: Threaded (normal): BB-RS501. Press-Fit: BB-RS500-PB
Threaded bottom bracket shell width: 68 mm, 70 mm
Crank fixing screw included
Average weight: 791 (38T)