Prima 20x17mm CVT roller weights for Vespa GT, GTS, and GTV 200/250/300cc scooters and other Piaggio 125–300cc large-frame models. Black polymer outer shell with aluminum inner sleeve. Set of 6. Available in multiple gram weights — select your weight from the variant options.
The 20x17mm size is the standard roller for the Piaggio M31/M35 CVT platform used in modern Vespa and Piaggio large-frame scooters.
- Set of 6 roller weights
- Black polymer outer shell with aluminum inner sleeve
- 20x17mm — standard size for Piaggio M31/M35 large-frame CVT variators
- Lighter weights: higher RPM, better acceleration and hill climbing
- Heavier weights: lower RPM, higher top speed
- Prima
Tuning Guide
- Lighter rollers — better low-end acceleration, hill climbing, and stop-and-go riding
- Heavier rollers — higher top speed on open roads, lower cruising RPM
- Heavier rider or stock engine: lean lighter | Lighter rider or performance exhaust: lean heavier
| Make |
Model |
| Vespa |
GT 200, GTS 250, GTS 300, GTV 250, GTV 300 |
| Piaggio |
MP3 250/300, Beverly 250/300, X9 250, X10 350 |
| Aprilia |
Scarabeo 250/300 (Piaggio engine) |
| Various |
All Piaggio M31/M35 platform 125–300cc scooters with 20x17mm variator rollers |
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