Ended up buying 2 of these Piston kits cheap enough, rings might even be of use, 99% sure G pins will work..
Pit Bike YX160cc 60mm PISTON KIT 13mm Gudgeon Pin Fits All YX160 Chinese Imports,
Note EW 350 G Pins are 1/2inch x 2 3/8 inch (12.7 x 60.5mm)
This is a 150cc to 160cc 4-stroke ultra performance piston kit with Molybdenum top. Fits engine numbers YX1P60FMJ.
Molybdenum coatings allow for cooler running and less movement under intense heat.
The piston has a 60mm diameter and has a 13mm gudgeon pin. You will receive the items shown in pictures 1-3. only.
The kit includes one piston, five piston rings, one gudgeon pin (13mm) and two circlips
A Petrol scooter manufactured and branded part...........Molybdenum !!!!!! Probably just use the pin, but be interesting to
compare piston when it arrives. Will post some photos.....