This is the Dr. Pulley 19x15.5 Round Roller Weights, 169-258 for Aprilia Mojito, Aprilia Scarabeo 4T, Aprilia Sport City One, Aprilia Sr R Factory, Aprilia Sr Street, Piaggio Fly, Piaggio Typhoon, Piaggio Vespa and many more. All weights on Clearance.
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.
Benefits:
- Dr Pulley has a US Patent Number 7,276,004
- Their sliding roller weights eliminate abnormal wear
- Prevent reduction gear ratio deterioration
- Prolong the useful life of the transmission
- 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 wear automatically
- Adjust by itself to move further outward in a movable drive pulley half
- Make the vehicle reach a higher maximum vehicle speed.
Product Specifications:
- Size: 19x15.5
- Set of 6
- Broadens your range of gear ratios
- Increases acceleration and re-acceleration properties
- Increases top end speed
- Lasts longer than standard roller weights
- Excellent Heat Resistance
- Low Friction / Low Wear
- U.S. Patent Number: 7,276,004
- Please Note: Weight Color May Vary
