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Dr. Pulley 23×18 Sliding Roller Weights

$14.99

Dr. Pulley 23×18 Sliding Roller Weights for 250cc water-cooled 172mm engines. 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 …

Dr. Pulley 15×12 Sliding Roller Weights

$14.99

select weight from drop-down menu. These weights also fit many scooters from Yamaha including Zuma CW50, Zuma 50F, Vino and C3. Traditionally, gear ratio is changed by the up-and-down rolling movement of the roller weights in the ramp of the Moveable …