Amazon.com: Cylinder Piston Gasket Head Set Fits Yamaha PW50 (1981-2018) Bore 40mm : Automotive
Amazon.com: FLYPIG 44mm Piston Assembly Engine Cylinder Piston Ring Head Gasket kit Fit for Yamaha PW50 PY QT 50 Big Bore PW60 QT60 60cc Pit Dirt Bike 1981-2009 : Automotive