Yamaha PW50 Big Bore 60cc Top End Kit
Yamaha PW50 60cc Big Bore Kit 1979-2009 (top end cylinder kit)
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Bolt on 60cc Big Bore Kit for Yamaha PW50 and QT50 Pit Bikes. This is a complete top end cylinder kit ready to install out of the box. Breathe new life into your kid's bike with our high quality, affordable and reliable big bore kit!