Polini racing crankshaft engineered for high-performance Piaggio 50cc engines.

Features a reinforced forged connecting rod designed to handle tuned and racing setups up to 70cc, delivering reliable power output up to 14 hp. The small end bearing accommodates 12mm piston pins and maintains original stroke specifications.

• Piston pin : 12mm
• Stroke : Original
• Connecting rod : Reinforced, forged steel
• Power rating : Up to 14 hp
• Applications : Sport, Mid-Race setups
• Compatible with : Piaggio 50cc (Zip, NRG, Typhoon, and similar models)