Burgtec Thick-Thin Direct Mount Chain Ring - SRAM Direct Mount - 3mm Boost - Round - Purple Rain - 9-12 Speed - 28T PDP|PLP|Brake Rotor Type Ventilation: It features an active

Ventilation: It features an active cooling system that maximises airflow while riding or while stationary

Ventilated mesh back keeps you cool and dry and  the low-profile bottom gripper keeps pads in place

Includes: Jagwire inner cable

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Burgtec Thick-Thin Direct Mount Chain Ring - SRAM Direct Mount - 3mm Boost - Round - Purple Rain - 9-12 Speed - 28T PDP|PLP|Brake Rotor Type Ventilation: It features an activeKeep 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.