S&S Camshaft Kit - 551G Gear Drive - Twin Cam

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

This is the 551 Series 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.

• Designed for engines with 96 to 106 CID and 9:1 to 9:9 compression, this is a bolt-in cam set for stock or mildly modified touring bikes
• Reverses the rear cam's direction of rotation, providing additional operating clearance between cam lobes making higher cam lifts possible
• More power across the rpm range, with improved low and midrange torque, strongest from 1,000-4,000 rpm
• Increases valve timing accuracy by eliminating timing chain lash and loosely fit stock chain
• Material must be removed from inner surface of the stock gear cover to install
• A hydraulic press and other professional level tools are required for installation
• Cam bearings and gaskets must be replaced when installing new cams
• S&S recommends that adjustable pushrod/cover kit be used
• Not recommended for compression ratios of 10:1 or greater
• Kit includes inner gears, outer gears, inner and outer bearings, gaskets and instructions
• Made in the USA
• Installer must check coil bind, valve to valve clearance, and valve to piston clearance.
• Due to the inherent characteristics of gear drives, you may experience more valve train noise.