S&S Camshaft - Easy Start - 635 H.O. Gear Drive - Twin Cam '99-'06 (except '06 Dyna)

The S&S Camshaft adds power and throttle response with a performance cam profile built for your engine.

This is the 635 H.O. grind. See the cam specs for lift, duration and valve events, and confirm your engine's compression and valvetrain are matched to the cam before installing.

Fits Harley-Davidson Touring (1999-2006), Softail (2000-2006) and Dyna (1999-2005) models. Check the fitment chart below to confirm your exact year and model.

• Allows for easy start by initially reducing crank compression, but once the engine starts and rpm increases, the compression release lobe is centrifugally retracted and the engine runs normally, with full compression, and without any loss in performance
• High lift camshaft for modified engines with 106" or greater displacement and compression ratios between 10.0:1 and 11.0:1
• Best power from 3000 rpm - 6000 rpm
• Includes camshafts, 4-gear set, gearcover gasket, bearings, retaining ring, o-ring, threat lock and instructions
• Made in the USA
• Not bolt-in.
• Not for models with OEM compression releases.
• Works well with stock, un-ported heads, but S&S CNC ported heads are recommended.
• High-lift valve springs, adjustable pushrods, and clearance checks are required.
• Due to the inherent characterics of gear drives, there may be more valve train noise.