Andrews TW55 Chain Drive Camshafts 288155*

Description

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.. Made in the U.S.A.. NOTE: All Andrews gear-driven cams require four-gear set for installation (DS-199532 or DS-199538 for 99-06 applications; 0925-0166 or 0925-0152 for 07-15 Twin Cam and 06 Dyna applications).. NOTE: Chain Driven Cams: 00-06 model cams use a splined cam drive sprocket. These cams will fit in the 1999 Twin Cam motor, but the splined cam drive sprocket OEM #25716-99 or DS-199175 must be used.. NOTE: Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance.. NOTE: 59G, 60G and 64G cams are for highly tuned engines and require the knowledge of an expert engine builder for proper setup and installation.. TW9 SERIES GRIND CAMS. Bolt-in cam with more power through the entire rpm range (1000-5400 rpm). Use stock springs. 12 SERIES GRIND CAMS. Similar timing to earlier stock 88 cams but gear drive cams are used instead of chains. No engine tuning needed. Uses stock springs. 21 SERIES GRIND CAMS. Bolt-in cam for more torque with stock compression. Run best with low restriction exhausts (1700-5200 rpm). Similar to the EV-23 cam. Cams work well with fuel injection or carburetor models. Can be used with stock valve springs and tappets. Works well with carbs or fuel injection. 26 SERIES GRIND CAMS. Bolt-in cam for lower rpm torque on heavier bikes. For two-up touring. Good power from 1800-5500 rpm.