SHIMANO's new FC-RX810-1 crank balances weight and efficiency for mixed-terrain riding. Gearing options cater for the specific demands of gravel riding and to maintain tighter gear steps for maintaining pedaling rhythm. It is offered in 40T and 42T chainring options and 170, 172.5, and 175mm crank arm lengths.

Specifications
Optimum gearing for mixed terrains and riding styles
Hollowtech II Technology
Series: SHIMANO GRX 11-speed
Chainline: 50.1mm
Chainring: Choose 40T or 42T
Compatible BB Type: Recommended SM-BB72 (PressFit), SM-BBR60 (Threaded)
Threaded BB Shell Width: 68/70mm
Q-Factor: 151mm
Compatible Chain: HG-EV 11-speed, HG-X11
Bolt Circle Diameter: 110mm 4-bolt asymmetric
Rear Speeds: 11-speed
Color: Black

Mfr Claimed Weight
644g (40t)