S&S, MR103 camshaft kit with Easy Start gear drive (IOG)

0.585" valve lift. IOG = gear driven camshafts, with inner and outer gears. Complete kit with installation hardware, bearings and gasket.
For stock 103" engines with stock compression ratio of 9.7:1 up to 10.5:1. Works well with un-ported heads and is excellent for CNC-ported S&S heads. More power across the entire RPM range. 2500-5500 RPM The Easy Start camshafts make starting easier by reducing the build-up of compression pressure in the cylinders during starting. This is achieved by slightly lifting the exhaust valve off its seat, via a spring-loaded compression release lobe within the camshaft. After starting, the compression release lobe retracts by centrifugal force. The only difference is during starting, as you will now be able to effortlessly electric-start your Big Inch engine, without the need for large batteries and/or starter motors. A stock starter motor and battery are sufficient. When the engine is running, the camshafts operate as normal cams, with no loss of power, torque or anything else.
Note: The installation kit required for the Easy Start camshafts is included in this complete kit (IOG). It is available separately from S&S as a spare part for this kit as 503566.
Note: The Easy Start cam profile is not a bolt-in fit for these 99-06 Twin Cam models. All will require and/or may need clearance grinding and high-lift valve springs.
Note: Not compatible with kick-start models.
Note: Camshafts manufactured before January 2010 will require adjustable pushrods.
Note: Below 900 RPM a clicking sound may be heard. Adjust the idle speed to 1000-1100 RPM.


Specifications


Brand
S&S


Application
99-06 Twin Cam (Excl. 2006 Dyna) (NU)


Sales unit
Kit


Material
Steel


Packaging weight
2.7 kg


HS Code
84831021


Motorcycle family
DYNA, SOFTAIL, TOURING


Original name
S&S, Easy Start gear drive MR103 camshaft kit (IOG)