Shimano GRX FC-RX610-2 Crankset - 172.5mm, 12-Speed, 46/30t, 110/80 BCD, Hollowtech II Spindle Interface, Black

The Shimano FC-RX610 crank balances weight savings, optimized efficiency and an array of gearing options that cater to the segmented demands of mixed-terrain riding. Gravel-optimized 46-30t gear combination ratios preserve riding rhythm on rough surfaces Smaller gear steps for cadence control on mixed-terrain riding Compatible with HG 12-speed chains 47mm chainline 151mm Q-factor Number of Chainrings: Double Color: Black Chainline/Hub Compatibility: 135/142 Road Disc Hubs > 415 mm Chainstay Pedal Spindle: 9/16" Crank Intended Use: Gravel Crank Length (mm): 172.5 Rings: 46/30 Spindle Interface Type: Shimano Hollowtech II Drivetrain Speeds: 12 Defined Color: Black Chainring BCD: 110 Shimano Asymmetric , 80 BB Included: No