This is the SRAM XX1 32 Tooth GXP Chainset. The SRAM XX1 was built with a dedicated 1X design philosophy - making it simpler, lighter and more durable than any other. No matter where you ride, no matter what you're up against: SRAM XX1. Unstoppable. Featuring Carbon arms with forged aluminium spider. Developed for the maximum chain control, each tooth's thickness is precisely CNC-machines to support the chains inner and outer links perfectly. Six available chain rings (28-38) allow you to tune your gear range to match your terrain, wheel size and riding style. Available in either wide/narrow Q factors (distance between the pedal mounts).
Each X-Sync chain ring fits a single universal spider - allowing you to change ring without removing the light-weight carbon crank arm. A CNC-machined 'wide tooth, narrow tooth' pattern is repeated around the entire chainring, perfectly mirroring the chain's inner and outer links for maximum control. Comes complete with a GXP bottom bracket. GXP's Gutter Seal design cuts friction and weight - improving both feel and performance.