Bump your Piaggio 4T 50cc scooter to 78.8cc with the Polini Big Bore Kit. Designed for 4-stroke 2-valve and 4-valve 49cc Piaggio engines, this complete kit includes a finned aluminum alloy cylinder, flat-top piston, full gasket set, and all hardware needed for the bore-up. The 11.6:1 compression ratio delivers a significant increase in mid-range and top-end power, and the included gear-up ratio (14:43) provides a 60% increase over stock (11:54) for improved top speed.
For off-road and closed-course competition use only. Not intended for use on public roads or land. Not legal for use in California on pollution-controlled vehicles. Performance upgrades are not covered under warranty.
California Prop 65 Warning: www.p65warnings.ca.gov
