Performant and reliable, the Polini Hi-Speed variators ensure optimal power transmission from the engine. Compatible with scooters equipped with 50cc 2-stroke Piaggio engines (long case). Some of the most important applications include: Aprilia Mojito / Custom / SR 50 R / SR 50 R Di-Tech / Derbi Atlantis AC / Atlantis LC / Bullet / GP1 / Gilera Runner / Runner SP / Runner Purejet / Stalker / Piaggio NRG / NRG mc2 / NRG mc3 / NRG Power / NRG Power Purejet / Piaggio Typhoon / TPH / Typhoon XR Vespa Primavera / Sprint.
The Polini Hi-Speed variator line is one of the most optimized variator options available for scooters and maxi-scooters. Special attention has been given to improve both acceleration and top speed by modifying the ratio under low torque conditions. Reliability and performance are enhanced compared to the original version. It includes all components shown in the picture.
Technical specifications:
- number of roller sets: 2 (6 rollers/set)
- dimensions / weight of rollers: 19x15.5mm / 5.0g
- dimensions / weight of rollers: 19x15.5mm / 6.3g
- includes 2 x counterpressure springs (-18% / -30%)
- includes transmission belt - Polini Kevlar Belt (802 x 18.5 - 30°)
- includes rear clutch springs.
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