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GY6 157QMJ Engine Codes 157QMJ JJ157QMJ 1P57QMJ BN157QMJ Other QMJ models
domestic ground only
Make Model Yamaha Zuma 50 (YW50)
(Buddy 125/150)
Material: Black plastic
Polini 1500 RPM Compression Torque Spring | 139QMB Dio muffler GY6 157QMJ Engine Codes 157QMJThe Polini Compression Torque Spring (contra spring) at 1500 RPM is a direct fit performance upgrade for Honda Ruckus, Honda Dio, Genuine Buddy Roughhouse, and a wide range of 139QMB based 50cc and 80cc scooters. A stiffer contra spring raises the RPM at which your CVT begins upshifting, keeping the engine in its powerband longer for stronger acceleration and improved top end performance. Made in Italy by Polini to exacting tolerances. Key Features
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