Polini Clutch Spring Set for 50cc motors. Includes various colors and sizes.

Expect better performance from your scooter, period. No matter what stage you are in upgrading your scooter, simply add Dr. Pulley weights (and premium belt) for a power upgrade. Dr. Pulley roller weights are the most advanced weights available. These...

Explore the ultimate solution for fine-tuning your CVT transmission! With our comprehensive tuning kit, you're in control. Embrace the power of 36 roller weights, organized into 12 sets of 3 sizes, ranging from 2g to 13g. This exceptional variety...

Discover exceptional roller weight quality that makes a noticeable difference. Elevate your scooter's performance by switching to 10s or 11s from your stock weight (12-14), offering superior take-off and replacing worn-out stock weights for enhanced...

Explore the ultimate solution for fine-tuning your CVT transmission! With our comprehensive tuning kit, you're in control. Embrace the power of 36 roller weights, organized into 12 sets of 3 sizes, ranging from 6g to 17g. This exceptional variety...

Compression springs do a couple of things. First they supply the pressure to engage the belt. They also determine the rate at which the CVT transmission changes from low to high gear. A 1000 RPM spring will go into a higher gear than a 2000 RPM spring...

Explore the ultimate solution for fine-tuning your CVT transmission! With our comprehensive tuning kit, you're in control. Embrace the power of 36 roller weights, organized into 12 sets of 3 sizes, ranging from 3g to 14g. This exceptional variety...