S&S CYCLE 0925-0743 106-4858 551 Cam Kit - 551 Series - Chain Drive - Twin Cam

Features

• Camshaft gear drive kits increase valve timing accuracy by eliminating timing chain lash and loosely-fit stock chain drive
• Reverses the rear cam's direction of rotation, providing additional operating clearance between cam lobes; as a result, higher cam lifts are possible with the gear drive kit
• Kits include cams, inner gears, outer drive gears, inner and outer bearings, gasket and instructions
• Material must be removed from the inner surface of the stock gear cover to install S&S gear drive cams
• A hydraulic press and other professional-level tools are required to install these kits
• Cam bearings and gaskets must be replaced when installing new cams
• 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.
• Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance.
• Designed as bolt-in cam for touring bikes with compression ratio between 9:1 and 9:9
• More power across the rpm range, with improved low and midrange torque
• Can be used with stock pushrods, springs and lifters
• Strongest from 1,000-4,000 rpm
• Made in the U.S.A.

Specs