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Polini 15/42 Gear Set for Minarelli 2-Stroke Scooters. Higher Gear Ratio for increased top speed and lower RPM while running at top speed. It is recommended this gear set be used after installing a big bore cylinder kit. A stock engine will not have enough power to make use of a taller gear set.
Fits the following models with Minarelli engines:
- Aprilia: SR50 and Scarabeo 50
- Benelli: Pepe 50
- Genuine: Buddy 50
- Malaguti: Ciak 50, F12 Phantom and F15 Firefox
- Yamaha: Zuma, Zuma II, Jog, C3 and Vino 50cc 2-Stroke
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