Updates old mechanical style cams and tensioners to new hydraulic tensioner systemEliminate wet sumping, blowby and oily air cleanersAll parts work and function together in total harmony25°-35° cooler engine temperatures15°-30° cooler oil temperatures15 lb - 30 lb of oil pressureKit includes Feuling® Race Series™ high volume oil pump, high flow camplate, REAPER® Series conversion camshafts, Race Series™ hydraulic roller lifters, Quick install adjustable pushrods, sprockets, hydraulic tensioners pads and housings, chains, spacers, Timken® bearings, gaskets, O-rings, hardware, ARP® fasteners, washers, moly lube and Loctite®Made in the USADoes not fit '06 Dyna'99-'06 Twin Cam engines utilize the '99-'06 inner cam journals allowing the use of the '07-'16 camplates, oil pump, hydraulic chain tensioners and chain drive system (includes sprockets, hydraulic tensioners, chains and spacers needed for installation.