Description
Cylinder Kit AC Taida 171cc Forged Piston (61mm) for GY6 125cc & 150cc 54mm BOOSTER adding a fifth CNC machined port adding a fifth CNC machined port to allow higher gas flow entering the combustion chamber better start up and a slightly higher top speed The cylinder bore is 61mm The Taida 61mm Cylinder Big Bore Kit fits all air cooled 4 strokes