S&S Cycle SS330-0343 HP103C Chain Drive Camshaft Kit for Twin Cam 07-17/Dyna 2006Description for S&S Cycle HP103C Chain Drive Camshaft Kit Most S&S cams have higher lift than stock and are designed to take advantage of the extra flow of ported stock heads or S&S Super Stock heads. Due to the high lift of these cams, S&S adjustable pushrods are recommended. To get the best performance from a performance cam installation, a high flow intake and exhaust system is also recommended. Quick installation and Easy Start Cams allow stock