For Yamaha QT50 1979 - 1987. for Yamaha PW50 1981 - 2009. - High-Quality Cast Aluminum Piston for Superior Quality and Performance. - Bore: 44mm. - Piston: 44mm. - Cylinder is Manufactured from Cast Iron and Powder Coated Black.
This product would be ideal for Yamaha PW50/PY/QT50 engine owners who wish to improve performance while keeping the original head and piston assembly.
