The K-Edge Cx Chain Guide Single Ring Cross is a simple precision-made component that provides valuable insurance against front derailleur malfunctions. Specifically designed for the extreme conditions of cyclo-cross, it is designed to give the rider the confidence topower through any situation. Highly recommended to prevent structural damage to carbon and aluminium frames, but also protects the finish of any other frame material K-Edge Cx Chain Guide Single Ring Cross Features Clamps onto the frame independently of the front derailleur mount using its own lightweight clamp or onto the braze on adaptor, so requires some round seat tube in the area below the derailleur Made from 6061-T6 heat treated aluminium Long-lasting protective anodised finish K-Edge products are proudly CNC machined in the USA and have a Lifetime warranty: you break it, we'll replace it