S&S Cycle Premium High-Performance Tappet without HL2T Kit 330-0175 Reduced valve train noise from start up to shut down Close tolerance for low leak-down ratesfast pumpup and superior high rpm performance Low mass, bearing grade, silicon nitride check ball and lighter check ball springenhances fast pump-up and quiet operation 100% tested to ensure that leak down and top end oil flow are within specification Available with or without the S&S HL2T limited travel kit