The SRAM XX1 BB30 crankset was intended for freeride, but many riders are tapping into XX1 for its simplicity and effectiveness from all-mountain to cross country riding. Developed for maximum chain control, each tooth's thickness is precisely CNC-machined to support the chain's inner and outer links perfectly. Additional chain rings (items 50-0679 and 50-0682) allow you to tune your gear range and match your terrain, wheel size and riding style (chainrings not included).
Each X-Sync chainring fits a single, universal spider, allowing you to change rings without removing the lightweight carbon crank arm. New tooth profile alternates thickness by inner and outer links, providing maximum chain control. Besides serious weight savings, the BB30 bottom bracket means more ankle clearance, greater bearing durability and stronger crank construction.