Dr. Pulley 18x14 Sliding Roller Weights Frame Parts Performance Alternator Kit for 50cc

Performance Alternator Kit for 50cc QMB139 4-stroke engines and engine based scooters / vehicles

Front Wheel Assembly for Razor MX350/MX400 Dirt Rocket

02=version 2

6-30 commonly found on 50cc full-size scooters

Dr. Pulley 18x14 Sliding Roller Weights Frame Parts Performance Alternator Kit for 50ccDr. Pulley 18x14 Sliding Roller Weights for 125 150cc 4 stroke GY6 engines. 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 (not rolling) provides exclusive advantages to increase CVT