BOX shook up the drivetrain market last year with the release of their wide range 9-speed drivetrains

6 casing caps

lightweight hand pump with an efficient

comfort and temperature control

PLEASE NOTE: Not backwards compatible with Pro 2 hubs

Burgtec Thick-Thin Direct Mount Chain Ring - SRAM Direct Mount - 3mm Boost - Round - Race Red - 9-12 Speed - 34T Images Uploaded - Ready for Review BOX shook up the drivetrainKeep that chain in place where it should be with a Burgtec Thick Thin Chain Ring. Designed with a proven thick thin tooth profile for improved chain retention. Who's this item for: Riders who use 1x drivetrains and are looking for superior chain retention as well as durability. Weight: 0. 08g Pros: Wide range of tooth options. Works for 9, 10, 11, and 12 speed setups. Great build quality. Cons: Oval options not available in all mounting types.