Polini 13/44 Gear Set for Yamaha Zuma (146-38)

Polini 13/44 Gear Set for Yamaha Zuma 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.

Also fits the following models with Minarelli engines:

• Aprilia: SR50 and Scarabeo 50
• Benelli: Pepe 50
• Malaguti: Ciak 50, F12 Phantom and F15 Firefox
• Yamaha: Jog, C3 and Vino 50cc 2-Stroke

Made in Italy!

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• Recommended For Use With A Big Bore Kit
• Requires Coarse Thread 10x1.25mm nut (not included)