Dr. Pulley Variator Roller Weight Set 25x22 (Aprilia, Piaggio 500)

Description: Dr. Pulley 25x15mm Roller Weights for the Aprilia, Piaggio 500cc 4-stroke engines. Traditionally, the gear ratio is changed by the up-and-down rolling movement of the roller weights in the ramp of the Moveable Drive Pulley (MDF). 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 roller weights eliminate abnormal wear, prevent reduction gear ratio deterioration, prolong the useful life of the transmission, and have the availability to adjust reduction gear ratios as well as driving performance. 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 Loctite, torque nut to 30-35ft-lbs. For reassurance please consult your manufacturer's variator torque specs.

NOTE: Please select weight from the menu

Features:

•    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

Specifications:

•    8x Roller Weights: 25x22mm 18gm<30gm
•    U.S. Patent Number: 7,276,004
•    Material: SL-9T, SL-9TS (oil-less PA46)
•    Made in Taiwan
•    Fit Aprilla 500
•    Fit Piaggio 500

Supported Models: Aprilia Atlantic 500 ('01-'04), Aprilia Scarabeo 500 ('03-'06), Carter GT250 Buggy, Piaggio Beverly 500 ('02-'04), Piaggio X9 500 ('01-'02), Piaggio X9 Evolution ('03-'05), SYM RV250 and various unlisted makes/models.

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Item Weight & Package Dimensions:
•    0.039~0.066 pounds | 3.486" (L) x 2.852" (W) x 1.050" (H)