520 HPE Series ChainEliminates the need of periodic re-lubrication, while ensuring at least the same mileage obtained with a normal chain regularly lubricated every 310 milesNo time wasted cleaning the lube spatter from your bikeMore power to the wheelMoney savings on lube, fuel consumption and bike cleanersEnvironmentally friendlyFor medium and small displacement motorcyclesTetrahedral Amorphous Carbon (ta-C) coating is an advanced DLC (Diamond Like Carbon) coating applied on the surfaces of the bushings and the rollers of the HPE Chain, combining high hardness with a low coefficient of frictionCombines high hardness with a low coefficient of frictionReduces energy dissipation and increases efficiency in the driveSprockets must be made of steel, but special coatings not required.