Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world

The GRX series offers premium performance at an incredible value, with thoughtful ergonomic designs and gravel-centric gearing for all manners of unpaved adventures. 

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
- Colour: Series colour
- Average Weight: 791g (38T), 812g (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, 170, 172.5, 175
- Optional Chain Guard: Without chain/bash guard
- 2-piece Crankset
- Hollowtech Crank Arm
- Threaded Bottom Bracket Shell Width (mm): 68, 70
- Crank Fixing Screw Included

*Bottom bracket not included

Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.