Bolt-on kitWith updated finsNo case machining requiredForged pistonsMade in the USAIncludes oil pump/cam plate, pushrods, tappets, tappet cuffs, 550 camshaft, valve springsOil Pump/Cam Plate:Precision machined from billet aluminumPassage plugs removable for servicingIndependent scavenge sections for flywheel cavity and camchestDebris screens in both scavenge pickupsMagnet in camchest to help to stop debris from entering oil pump44% flow increase on supply side and 58% flow increase on scavenge sidePressure relief valve is adjustable with unit installed in enginePushrods:Quickee pushrodsTappets:Hand assembled to exacting tolerancesReduced valve train noise from start up to shut downClose tolerances for low leak down ratesTappet Cuffs:Hard anodized black coatingBillet aluminum constructionTappet stability in high lift and high rpm sitiuationsCamshaft:S&S 550 camshaft - designed for big bore applicationsValve Springs:Works well with camshafts up to 0.605'' liftHigh performance conical single wire springIncludes top collars, keepers, valve seals and bottom collars