520 HPE Series ChainNormal lubrication not requiredNo 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 on the bushings and rollersCombines 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