The chain guide includes a carbon fiber bracket as well as a block insert. The bracket extends farther towards the rearwheel than an OEM bracket, allowing for a precise feed of the chain directly from the guide to the sprocket. The blockinsert is CNC-machined from high-density polyethylene, providing a durable, long wearing and low friction surface for the chain to ride. The insert fits tightly within the bracket and wraps around the front face to provide wear protection. The insert can be purchased on its own as a replacement if needed.

The Pro Circuit Carbon Fiber Chain Guide is a must-have item for 2018-2019 KX250F/KX450F racers or recreational riders.