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Dr. Pulley Variator Sliding Weight Set 19x15 (Aprilia, Piaggio, Vespa 50)

Dr. Pulley Variator Sliding Weight Set 19x15 (Aprilia, Piaggio, Vespa 50)

Description: Dr. Pulley Variator Sliding Weight Set 19x15mm for Aprilia, Piaggio 50, Vespa 2-stroke engines. Expect better performance from your scooter, period. No matter what stage you are in upgrading your scooter, simply add Dr. Pulley Sliding Weights and a kevlar belt for a power upgrade. Dr. Pulley Sliding Weights are the most advanced weights available. These sliding weights perform better than standard round weights by allowing the variator to open farther for higher top speeds, and last longer with less performance material loss. The weights have several unique features such as their composite material containing nylon for better performance.

Installation: 1. Slack the belt by opening the CVT clutch gives belt slack to the variator side. 2. Then install the variator drive face while lifting the slack belt further away from the center boss if done properly should not see any splines between variator drive face slop-side and boss flat-side. Should be flushed together. 3. Then install the existing variator fan, washer, and hand-tight nut. 4. Finally, apply blue Loctitetorque nut to 30-35ft-lbs. For reassurance please consult your manufacturer's variator torque specs.


•    Broadens your range of gear ratios
•    Fastest Sliding Weights available
•    High-Temperature Resistance
•    Increases acceleration and re-acceleration properties
•    Increases top-end speed
•    Lasts longer than standard roller weights
•    Low Friction Coefficient (low wear)
•    No abrasive fibers (glass fiber or carbon fiber)
•    Suitable for aluminum variator housing


•    6x Sliding Weights: 19x15mm 6gm<12gm
•    U.S. Patent Number: 7,276,004
•    Material: SL-9T, SL-9TS (oil-less PA46)
•    Made in Taiwan
•    Fit Variator Housing95mm Slides: 3 Boss: 21mm
•    Fit Belt Size: 748-18-28 (Fit Aprilia ONLY)
•    Fit Belt Size: 
788-18.1-28 (Fit Piaggio ONLY)
•    Fit Belt Size: 738-18.5-28 (Fit Vespa ONLY)
•    Fit Aprilia 49/50cc
•    Fit Piaggio 49/50cc
•    Fit Vespa 49/50cc

Supported Models: Aprilia Mojito, Aprilia Scarabeo 4T, Aprilia Sport City One, Aprilia Sr R Factory, Aprilia Sr Street, Piaggio Fly, Piaggio Typhoon, Piaggio Vespa, Various unlisted makes/models

Item Weight & Package Dimensions:
•    0.013~0.026 pounds | 3.486" (L) x 2.852" (W) x 1.050" (H)

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Dr. Pulley Variator Sliding Weight Set 19x15 (Aprilia, Piaggio, Vespa 50)
  • Stock: 34
  • Part #: 169-257
Sold: 15
Views: 1964
Price in reward points: 24