Kits include the needed components to upgrade early 99-06 style mechanical spring tensioner cam chain drive systems to the late 07-17 hydraulic cam chain drive system. Includes a Feuling Race Series billet oil pump, High Flow camplate, Race Series full-travel lifters, Feuling's billet hydraulic tensioner housings, tensioner pads, cam chains, sprockets, sprocket alignment spacers, Timken/Feuling bearings, needed gaskets, O-rings, ARP cam, crank hardware, Loctite and moly lube. Made in the U.S.A.