Dr. Pulley 20x15 Sliding Roller Weights Mufflers Hoca GY6 61mm Complete Cylinder

Hoca GY6 61mm Complete Cylinder Head for 150cc and 125cc GY6 4-stroke engines and engine based vehicles

Mirror set

Replaces Yuasa part number YTR4A-BS and Interstate part number CYTR4A-BS

Made to work on mini-gas/electric scooters

Dr. Pulley 20x15 Sliding Roller Weights Mufflers Hoca GY6 61mm Complete CylinderDr. Pulley 20x15 Sliding Roller Weights for Aprilia Scarabeo 4T, Honda SH 125, Honda SH 150 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 (not rolling) provides