Andrews Products grinds its cams with the help of a computer with cam design capabilities. This superior technology gives the utmost in both performance and reliability. Only the best alloy steel billets and heat-treating processes are utilized. Furthermore, the power in Harley's Twin Cam engine can be made even more convincing when superior Andrews computer-designed high-performance cams are installed. Bolt-in cam with more power through the entire rpm range (1000-5400 rpm) Use stock springs All Andrews gear-driven cams require four-gear set for installation (DS-199532 for 99-06 applications; 0925-0166 or 0925-0152 for 07-17 Twin Cam and 06 Dyna applications). Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance. 59G, 60G and 64G cams are for highly tuned engines and require the knowledge of an expert engine builder for proper setup and installation.. CAMS 09H 06 DYNA 07-17TC
