Dr. Pulley 20x12 Sliding Roller Weights: Yamaha, Kymco Options:11.5 G 23" tall from the top

23" tall from the top of the headlight trim to the top of the screen

Super high performance clutch by Dr Pulley for SYM RV250 and 250 cc Yamaha maxi-scooters

Ensure the mounting surface is clean for a solid electrical ground through the engine case

NOTE: If you're putting a cylinder kit on one of these models listed

This is a premium quality OEM replacement for your GY6 scooter

Dr. Pulley 20x12 Sliding Roller Weights: Yamaha, Kymco Options:11.5 G 23" tall from the topUnlock 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