The Sram Force1 175mm Chainset delivers consistent performance every time out. Featuring SRAM's X-SYNC tooth profile, the Rival 1 crankset is engineered for complete chain control. Each tooth's thickness is CNC-machined to work seamlessly with the chain's inner and outer links. And with seven available chain rings, you can personalize your gear range to match the way you ride. Sram Force1 175mm Chainset Features Forged aluminium with detachable spider X-SYNC™ tall, square tooth design provides maximum chain control Sharp, narrow tooth profile and rounded chamfer edges help manage a deflected chain Mud-clearing recesses for the inner chain links and rollers Compatible with 130mm & 135mm rear frame spacing