Dr. Pulley 23×18 Sliding Roller Weights

Dr. Pulley 23x18 Sliding Roller Weights for 250cc water-cooled 172mm engines.
Please select weight from drop-down menu.
The following sizes now come in Black Pearl material: 16g,18g. Please see photo gallery for an example. 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 Note: ! Please see our Warranty & Returns Policy.
Size: 23x18
Set of 6
Available in 10 Gram Through 28 Gram Weight
Broadens your range of gear ratios
Increases acceleration and re-acceleration properties
Increases top end speed
Lasts longer than standard roller weights
U.S. Patent Number: 7,276,004
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Please Note: Weight Color May Vary
SUPPORTED MODELS: 250cc 172mm 4-stroke