Polished aluminum crankarms in a wide range of lengths and the DUB bottom bracket system mean the Rival crankset will keep spinning, no matter whatA tight and consistent 13-tooth gap between chainrings makes for accurate and dependable shiftingX-Range gearing technology gives you more range and a smoother gear progression, so youre always in the right gearDUB bottom bracket adds durability, simplicity, and virtually universal frame compatibilityCompatible with all Sram DUB Road bottom brackets Crisp and accurate front shifts175x46/33DUBBlack107mm 4-bolt2x12UPC/EAN/GTIN: 710845864605