High performance endurance.The first maintenance free chain.The Tetrahedral Amorphous Carbon (ta-C) coating, currently considered as the most advanced among DLC (Diamond Like Carbon) coatings, applied on the surfaces of the bushings and the rollers of the HPE Chain, combining high hardness with a low coefficient of friction.Eliminates the need of periodic re-lubrication, while ensuring at least the same mileage obtained with a normal chain regularly lubricated every 500 kmReduces energy dissipation and increases efficiency in the chain drive.Eliminates lubricant spatter during operation, minimizing environmental impact.