Dr. Pulley 20x12 Sliding Roller Weights Engines and Engine parts Pulley 18x14 Sliding Roller Weights

Pulley 18x14 Sliding Roller Weights for 125/150cc 4-stroke GY6 engines

Please check measurements before ordering

These engines are commonly found on imported Cag/Daytona pocket bikes

PZ22 Dual Feed Carburetor for 4-stroke horizontal cylinder Honda and Honda style engines

Dr. Pulley 20x12 Sliding Roller Weights Engines and Engine parts Pulley 18x14 Sliding Roller WeightsDr. Pulley 20x12 Sliding Roller Weights for the Linhai 260 300, Yamaha Morphous 250, Yamaha Vino 125, Yamaha Zuma 125 and many more. Please select weight from drop down menu. Traditionally, gear ratio is changed by the up and down rolling movement of the roller weights in the ramp of the Moveable Drive Pulley (MDF). Now the innovative Dr. Pulley Sliding Roller Weights slide up and down the ramp to change the gear ratio. This unique sliding movement