Shimano Sora FC-R3000 Crankset Cranking All Day Whether you're building up a fresh bike or you're upgrading some components, you'll want to get an amazing crank. The Shimano Sora FC-R3000 Crankset has a 2-piece construction and features an anodized and resin outer ring and a steel inner ring. With a 50/34T gear ratio, you'll have ample sprinting and climbing gears. Features Anodized aluminum and resin outer ring and a steel inner ring Compatible with 9-speed drivetrains50/34T chainring combo provides gearing for sprinting and climbing SPECIFICATIONSSpeeds9-Speed BB Compatibility-Chain Ring50/34TCrank Arm Length170, 175mm BB Spindle Interface Shimano Hollowtech IIChainring Material Aluminum/Steel Bolt Center Diameter (BCD)110 Shimano Asymmetric Crank Arm Material Aluminum Chainline-Bottom Bracket Included No Intended Use Road Weight N/A | Shimano | Sora Fc-R3000 Crankset 170Mm 9-Speed 50/34T | Aluminum