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 surfacesThe 17t range covers an array of riding conditionsSmaller gear steps for cadence control on mixed-terrain ridingHollowtech II crank arms provide strength and stiffness with the benefit of weight savingsCompatible with HG 12-speed chains47mm chainline151mm Q-factorItem SpecificationsColorBlackRings48/31Number of ChainringsDoubleCrank Length (mm)175Crank Intended UseGravelDrivetrain Speeds12Weight710BB IncludedNoPedal Spindle9/16"Spindle Interface TypeShimano Hollowtech IIChainring BCD110 Shimano AsymmetricChainring BCD80Chainline/Hub Compatibility135/142 Road Disc Hubs > 415 mm ChainstayDefined ColorBlack

• 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

 175mm, 12-Speed, 48/31t, 110/80 BCD, Hollowtech II, Black