Doppler 14-Tooth Front and 42-Tooth Rear Pre-Pressed Sprocket Set for Yamaha Zuma Models

Description

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

The nice thing with the Doppler gears is they come pre pressed with a 13 tooth gear, making your install a little smoother.

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

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