Feuling Race Series Chain Drive Oiling System Kit 7073 Available in either HP+ or Race Series Race Series kits include blueprinted 7075 hard anodized billet aluminum oil pump; 7075 hard anodized cam plate; full-travel, slow leak down hydraulic roller lifters and installation gasket kit Race Series hydraulic lifters offer tighter internal tolerances to handle heavy valve spring pressures and have increased roller clearance for steep ramped camshafts Test results show noticeable decrease in engine operating/engine oil temperature and oil blow by Made in the USA