The Shimano FC-RX820 crank balances weight savings, optimized efficiency and an array of gearing options that cater to the segmented demands of mixed-terrain riding.Gravel-optimized 48-31t gear combination ratios preserve riding rhythm on rough surfaces. The 17t range covers an array of riding conditions. Smaller gear steps for cadence control on mixed-terrain riding. Hollowtech II crank arms provide strength and stiffness with the benefit of weight savings. Compatible with HG 12-speed chains. 47mm chainline. 151mm Q-factor. Item Specifications: Color, Black, Rings, 48/31, Number of Chainrings, Double, Crank Length (mm), 175, Crank Intended Use, Gravel, Drivetrain Speeds, 12, Weight, 710, BB Included, No, Pedal Spindle, 9/16", Spindle Interface Type, Shimano Hollowtech II, Chainring BCD,.
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