Designed to handle whatever you can throw at it. SRAM\'s newly design Rival 12 Speed Crankset is a super polished aluminum chainset catered for all riders, available in a wide range of lengths. The DUB bottom bracket system means the Rival crankset will keep you spinning, no matter what. A tight and consistent 13-tooth gap between chainrings makes for accurate and dependable shifting, every time.The relationship between bottom bracket spindle and bearing is the core of DUB technology. It\'s where stifness meets durability. We took it a step beyond conventional thinking and made everything simpler - better integrating the relationship betweeen chainring, crank, spindle and bottom bracket. It\'s the approach to developing a complete system that equals better drivetrain performance.Road bikes are faster and more capable than ever before, and riders are expanding whats possible with drop bar bikes. X-Range is gearing for today\'s road riding.SRAM have completely reimagined road gearing for wider range, more useful and smoother gear progression, as well as smarter shift settings - enabled by AXS with X-Range, you\'re always in the right gear.KEY FEATURESX-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.SPECIFICATIONSCRANK ARM LENGTH: 160 / 165 / 170mm / 172.5 / 175BB SPINDLE INTERFACE: DUBBB COMPATIBILITY: All SRAM Road DUB BB\'sSPEEDS: 12CHAINRINFG MATERIAL: AluminiumBOLT CIRCLE DIAMETER (BDC): 107 BCDCHAINLINE: 45.0mmCHAINRING SIZE: 46/33T , 48/35T