There's more in your cam chest than just cams, so why not upgrade everything at once? Therefore S&S came up with these convenient kits. Now you can upgrade to performance cams and replace your stock oil pump, cam support plate, push rods and tappets with all new S&S parts. All kits for early models upgrade to late style oil pump system and S&S hydraulic cam chain tensioners. And you'll get improved engine performance, better, more consistent oil pressure and no more worries about cam chain failure. Kits are also available with S&S famous gear drive. Take a "No Cam" kit when you want to combine all the advantages of these S&S kits with an Andrews, Star Racing, Zippers Red Shift or other make camshaft.