The XX1 was built with a dedicated 1x drivetrain philosophy -- making it simpler, lighter and more durable than any other. Better known as the King of the Ring, the XX1 was developed for maximum chain control. Each of the crank's tooth thickness is CNC-machined for precise support of the chain's inner and outer links.
Each X-SYNC chain ring fits a single, universal spider allowing you to change rings without removing the lightweight carbon crank arm.
The BB30 delivers a more narrow Q-factor, more ankle clearance, greater bearing durability and stronger crank construction.
Please Note: BB30 bottom bracket and chainring are not included.