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Doppler 15/50 up gears for the 2002-2011 Yamaha Zuma -

Doppler 14/42 up gears for the Yamaha Zuma

$ 56.95 $ 69.00

Adding an upgear kit will increase your top speed and lower your RPM.

The 14/42 is a taller gear set than the 15/50 and requires a powerful engine to pull them.


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