Description
Top Racing 14/42 Up gears for the 2002-2011 Yamaha Zuma, the nice thing about these gears is they come pre pressed making your install a little smoother.
Changing you gear ratio is one of the best ways to increase your top speed and lower your RPM’s at cruising speed.
14/42 are rated 33% higher than stock gearing and not recommended for the stock 50cc cylinder.
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