Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Iron Bro Orange - 12 Speed Shimano - 30T YGroup_7421786062893 We'd recommend a minimum 19mm

We'd recommend a minimum 19mm rim width (21mm would be the sweet spot)

It is porous and can be stained like fabric

Liner: 83% polyester

Also removes PF30 BBs

Ideal for XC

Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Iron Bro Orange - 12 Speed Shimano - 30T YGroup_7421786062893 We'd recommend a minimum 19mmKeep 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.