KMC chains incorporate special design features that enhance the performance of shifting systems to the highest degree. By tailoring the tooth profiles to the chain's construction, the clearance between the sprocket and the chain is minimized, thereby increasing drive efficiency and reducing wear. The degrees of hardness between the chain and sprocket are also carefully matched, significantly extending the lifespan of the drive components. The best example of the success of this concept is the 10,000km+ components, as KMC guarantees a mileage of at least 10,000 km.