12 speed B- Bolts fit any 1x12 speed SRAM Derailleur

Weight: 48g

no need to reach for a drink

Less fade at higher temperatures

These are genuine M8000 replacement levers

Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Black - 12 Speed Shimano - 28T Envelope Shipping 12 speed B- Bolts fitKeep 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.