Kit includes Reaper® camshaft, Racer Series full travel hydraulic lifters with 0.200'' total travel, gasket/o-ring kit that allows installation of Feuling heavy-duty HP+ 0.0165'' wall one-piece pushrods or factory one-piece pushrods, ARP® cam/crank fasteners and cam instal kitMade in the USADue to the unstable nature of 4-valve engine design with one rocker arm activating two valve springs, Feuling recommends running one-piece pushrods over quick-install adjustable pushrods to maintain maximum cam/valve lift and reduce valvetrain harmonics and associated hydraulic lifter issues. Feuling fastener kit is recommended to help prevent cylinder head cracking kit replaces the rocker shaft bolts with studs and nuts to help reduce the stress of the rocker shaft standoffs.Race Series lifters have a slower bleed down rate to handle steep ramped cam and heavy valvesprings, designed to increase engine RPM before valve float.Not for '23-'24 models with 121'' VVT motors.