S&S, Easy Start gear drive 640 camshaft kit (IOG) - 99-06 Twin Cam (excl. 2006 Dyna) (NU) 930303 Special contours allow movement without

Special contours allow movement without giving up support

29956-70A and 29957-81B and 29957-85A

Centrifugal forces push the actuator arms outwards which applies extra pressure to the pressure plate

6 sizes compressor bands

S&S, Easy Start gear drive 640 camshaft kit (IOG) - 99-06 Twin Cam (excl. 2006 Dyna) (NU) 930303 Special contours allow movement without. 640" valve lift. IOG = gear drive cams with Inner & Outer drive Gears. Complete kit with installation hardware, bearings and gasket. For 95" up with 10. 5: 1 to 11. 5: 1 CR (stock in S&S 124" engines). Easy Start Cams make starting easier by reducing the build up of cranking pressure in the cylinders during starting. This is done by lifting the exhaust valve slightly of its seat, with a spring loaded compression release lobe inside the camshaft.