Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Black - 12 Speed Shimano - 28T Envelope Shipping The Catalyst Pro is the

The Catalyst Pro is the original Catalyst brake rotor that set new standards for performance and durability thanks to its two-piece construction and braking surface thickness that is optimised to suit each diameter

2 Rotating Hooks

100% silicone

5 and 29in with a tyre up to 2

The extra length allows you to vary your hand position on your bars or take up the extra room of exposed bar between your grip and shifter

Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Black - 12 Speed Shimano - 28T Envelope Shipping The Catalyst Pro is theKeep 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.