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Dr. Pulley Variator Roller Weight Set 21x17 (Aprilia, Piaggio, Vespa 250)

Dr. Pulley Variator Roller Weight Set 21x17 (Aprilia, Piaggio, Vespa 250)

Description: Dr. Pulley 20x17mm Round Roller Weights for the  Aprilia, Piaggio, Vespa GT/GTS/GTV 250/300cc 4-stroke engines. Dr. Pulley Round Roller Weights have exceptional durability, heat resistance and are low friction and low wear. 

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.

NOTE: Please select weight from the menu.


•    Broadens your range of gear ratios
•    Fastest Roller 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 Roller Weights: 21x17mm 8gm<16gm
•    U.S. Patent Number: 7,276,004
•    Material: SL-9T, SL-9TS (oil-less PA46)
•    Made in Taiwan
•    Fit Aprilla 250/300cc
•    Fit Aprilla 250/300cc
•    Fit Vespa 250/300cc

Supported Models: Aprilia Atlantic 200/250 and Scarabeo, Piaggio Beverly 200/250, Liberty 200, X8 200, X9 200 and X9 250 Evolution, Vespa GT, GTS, GTV 250/300, and various unlisted makes/models.

Item Weight & Package Dimensions:
•  0.017~0.035 pounds | 3.486" (L) x 2.852" (W) x 1.050" (H)

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Dr. Pulley Variator Roller Weight Set 21x17 (Aprilia, Piaggio, Vespa 250)
  • Stock: 40
  • Part #: 169-327
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