Polini sport cast-iron 70cc cylinder kit for scooters using Piaggio 50cc liquid cooled engines.

Robust cast-iron cylinder, this kit is the baseline for every day reliability and quality. A sports exhaust is recommended with this kit along with adjustments to the carb, variator and clutch. This kit can achieve upto 10HP at upto 10,000rpm, a gear kit and 19-21mm carb is also recommended to achieve this.

A new crankshaft is advised when fitting this kit.

Included: cylinder, head, head cover, piston kit, gasket set & reed petals.

Uses a long reach BR9ES spark plug. 

Polini 140.0183