This is the Dr. Pulley 15x12 SLIDING Roller Weights, 169-216 for Minarelli 50cc 2-stroke engines. 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 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.
- Dr. Pulley's U.S. Patent Number 7,276,004 states that their sliding roller weights eliminate abnormal wear
- Prevents reduction gear ratio deterioration
- Prolongs the useful life of the transmission
- Have the availability to adjust reduction gear ratios as well as driving performance.
- At the same time, Dr. Pulley Sliding Roller Weights are adapted to compensate for wear automatically, to adjust by itself to move further outward in a movable drive pulley half and to make the vehicle reach a higher maximum vehicle speed.
Product Specifications:
- Size: 15x12
- Set of 6
- Available in 3 Gram Through 11 Gram Weights, Including Half Gram Weights
- 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
- Please Note: Weight Color May Vary
