Crankshaft For Porsche 911 (1965-1971) Models.

Upgrade your early Porsche 911 engine with this high-performance, mass-balanced crankshaft—a direct replacement and significant upgrade for any 1965–1971 standard 911 (2.0L and 2.2L).

While the original 911T engines featured lower-speed crankshafts without mass balancing, this counterweighted design is essential for the higher-revving E and S engines, and a necessary upgrade for any performance application.

Key Performance Benefits:

• Reduced Friction & Increased Performance: The precision-designed counterweights eliminate vibrations caused by bending loads, significantly reducing bearing friction and improving overall power output.

• Extreme Speed Stability: Tested and proven in motorsport for continuous operation up to 10,000 rpm, with stability up to 11,000 rpm.

• Durability: Reduced stress on the crankcase and lower wear on all components, resulting in a longer engine lifespan.

Technical & Compliance Details:

• Engineering: Designed using the latest CAD and Finite Element (FE) calculation methods for perfect connecting rod weight balance.

• Motorsport Legal: FIA legal for historic motorsport and Appendix K compliant.

• Direct Replacement: Easily replaces any factory standard 911 crankshaft from 1965 to 1971 (2.0L and 2.2L), including the un-counterweighted 911T units.