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Your cart is empty.Dr. Pulley 18x14 Sliding Roller Weights for 125/150cc 4-stroke GY6 engines. Please select weight from drop-down menu. Select weight sizes now available in Black Pearl material: 10g, 11g, 13.5g, 14g. 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 performance. With Dr. Pulley, no abnormal wear will occur even when running in high gear. Please see our Warranty & Returns Policy.
Will
2025-07-16 14:29:54
I have a kymco super 8 150cc, theses work great, it's faster and works less at cruse speed. I would recommend getting a new kymco OEM belt and replace the old one also. My scooter runs like it did when it was new
Terry S
2025-07-02 12:18:29
These are really well made, quality, sliders. The shipment came early. I wanted to try a lower weight slider so I got these ones. I went down to 11 G from 13 G just to try see if it made a big difference. Unfortunately it's not working as well. Nothing wrong with the sliders themselves as I said they are already a great made product. I will repurchase the heavier sliders again and buy the same brand. BTW I drive a 150cc qmj157. It just doesn't seem to give you the same pool through the start to mid-range.
Anonymous by Choice
2025-06-28 17:32:26
Perfect high performance replacement on my Taotao Lancer 150 cc motorcycle/scooter.
Ashley Dyer
2025-06-26 21:33:50
Good product exactly what was stated in description
john
2025-06-21 11:57:15
Great upgrade. A whole lot better than round roller weights
Will
2025-06-03 16:05:10
I have a kymco super 8 150cc, theses work great, it's faster and works less at cruse speed. I would recommend getting a new kymco OEM belt and replace the old one also. My scooter runs like it did when it was new
Terry S
2025-05-29 10:46:54
These are really well made, quality, sliders. The shipment came early. I wanted to try a lower weight slider so I got these ones. I went down to 11 G from 13 G just to try see if it made a big difference. Unfortunately it's not working as well. Nothing wrong with the sliders themselves as I said they are already a great made product. I will repurchase the heavier sliders again and buy the same brand. BTW I drive a 150cc qmj157. It just doesn't seem to give you the same pool through the start to mid-range.
Anonymous by Choice
2025-05-20 10:19:57
Perfect high performance replacement on my Taotao Lancer 150 cc motorcycle/scooter.
Ashley Dyer
2025-04-29 11:10:37
Good product exactly what was stated in description
john
2025-02-03 12:30:59
Great upgrade. A whole lot better than round roller weights
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