S&S CYCLE Cams - 475 Series - Gear Drive - Twin Cam 106-4033

If you're running a Twin Cam 106 engine and want to extract every bit of performance from your build, eliminating timing chain lash is non-negotiable. S&S Cycle's 475 Series gear drive cams replace the inherent slop of stock chain drives with precision gear engagement, enabling higher valve lifts and tighter valve timing control. For builders pushing displacement, boost, or aggressive cam profiles, this kit unlocks clearance and reliability that chain-driven systems simply can't deliver.

• Gear drive design eliminates timing chain lash
• Reverses rear cam rotation for increased lobe clearance
• Enables higher cam lift potential
• Includes inner and outer gears
• Includes inner and outer bearings
• Gasket and installation instructions included
• Stock cam timing specification
• No tuning required
• Requires hydraulic press installation
• Requires professional-level machine work on gear cover
• Stock cam bearings and gaskets must be replaced
• 99–04 models require high-performance valve springs
• Installer must verify coil bind clearance
• Installer must verify valve-to-valve clearance
• Installer must verify valve-to-piston clearance
• May experience increased valve train noise
• MPN: 106-4033
• Made in the U.S.A.