Designed to handle whatever you can throw at it. Polished aluminum crankarms in a wide range of lengths and the DUB bottom bracket system mean the Rival crankset will keep spinning no matter what. A tight and consistent 13-tooth gap between chainrings makes for accurate and dependable shifting. FEATURES X-Range gearing technology gives you more range and a smoother gear progression so you’re always in the right gear Crisp and accurate front shifts DUB bottom bracket adds durability simplicity and virtually universal frame compatibility SPECIFICATIONSSpeeds: 12BB Compatibility: All SRAM Road DUB BBsChainring Size: 46/33T 48/35TCrank arm length: 165mm 170mm 172.5mm 175mmChainline: 45.0mmBB Spindle Interface: DUBChainring material: AluminumBolt Circle Diameter BCD: 107 BCDCrank arm material: AluminumColor Crank arm: Black