Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Toxic Barbie Pink - 12 Speed Shimano - 30T YGroup_7033711493165 Surface active technology eliminates stiction

Surface active technology eliminates stiction

Double cartridge outer bearing

It is waterproof

stretch build helps keep the temperature down

Extra Small - Small 52-55cm / 20

Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Toxic Barbie Pink - 12 Speed Shimano - 30T YGroup_7033711493165 Surface active technology eliminates stictionKeep 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.