Burgtec Thick-Thin Direct Mount Chain Ring - SRAM Direct Mount - 3mm Boost - Round - Bullion Gold - 9-12 Speed - 28T netsuite-webdata-created BR-M640 - Zee

BR-M640 - Zee

Sram XX1 Eagle 8 bolt direct mount for PowerMeter

Installation tools: BSA Threaded and PF30/BB30 Threadfit models require a 12 notch

1 x split bushing per pedal

Burgtec Thick-Thin Direct Mount Chain Ring - SRAM Direct Mount - 3mm Boost - Round - Bullion Gold - 9-12 Speed - 28T netsuite-webdata-created BR-M640 - ZeeKeep 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.