Unleash higher top-end speeds and lower your cruising RPMs with the premium Polini Aftermarket 13x44 Up-Gear Set. Specially engineered for 50cc 2-stroke scooters utilizing a Minarelli-style engine architecture, this taller primary gear kit alters your final drive ratio to maximize the output of modified high-performance configurations.
This up-gear set is built specifically for 2-stroke (2T) horizontal and vertical Minarelli engine configurations. Review verified model lines below:
HIGH-PERFORMANCE TUNING NOTICE: This product is an advanced taller gear modification. It is recommended for vehicles already upgraded with a 70cc big bore cylinder kit. A stock 50cc engine does not possess enough low-end horsepower to effectively pull a taller gear set, which will result in sluggish acceleration. Installation requires a 10x1.25mm nut (not included).
California Prop 65 Warning: www.P65Warnings.ca.gov
