S&S CYCLE Cam Kit - MR103 Grind - Twin Cam 330-0470

If you're running a Twin Cam engine and serious about maximizing valve timing accuracy and cam lift potential, gear drive conversion is a proven upgrade. The S&S CYCLE MR103 eliminates timing chain lash and looseness that compromises performance, while reversing rear cam rotation to open up additional operating clearance—allowing higher lift profiles impossible with stock chain drive. You'll gain a broad, consistent torque curve across the entire RPM range, making this kit essential for any builder prioritizing reliability and output.

Technical Specifications:

• Camshaft gear drive kit
• MR103 grind profile
• Twin Cam compatible
• Eliminates timing chain lash
• Increases valve timing accuracy
• Reverses rear cam rotation
• Enables higher cam lifts
• Includes cams, inner/outer gears
• Includes inner/outer bearings
• Includes gasket and instructions
• Billet aluminum construction
• Material removal required (stock gear cover)
• Hydraulic press installation required
• Professional-level tools needed
• Requires bearing/gasket replacement
• Coil bind check mandatory
• Valve-to-valve clearance check required
• Valve-to-piston clearance check required
• Increased valve train noise (inherent)
• Stock heads compatible
• Low-restriction intake/exhaust recommended
• Broad torque curve output
• Made in the U.S.A.