Dr. Pulley 20x12 Sliding Roller Weights: Yamaha, Kymco upgear resists yellowing

resists yellowing

By reducing the rotational mass of the drive pulley

1 - 50274 Plug

19mm bore for increased airflow and RPM

Number of Teeth (oil pump drive gear): 16

Dr. Pulley 20x12 Sliding Roller Weights: Yamaha, Kymco upgear resists yellowingUnlock the full gear range your CVT was designed for. Dr. Pulley 20x12mm Sliding Weights replace the flat spotting round rollers in your variator with a patented non round geometry that lets the variator retract further for a lower starting ratio and extend further for a higher top speed ratio delivering faster launches and lower cruising RPMs without touching your belt or variator. Choose your gram weight to dial in exactly the performance character