GOOFIT 63.5mm Piston Assembly Kit for CG 200cc Vertical Engine ATV Scooter Moped The item fits for CG 200cc Vertical Engine The piston diameter:63.5mm;The piston pin diameter:15mm,The length of piston pin: 47.4mm One week money back guarantee if not satisfied Arrival within 1-2 days (Sold by GOOFIT and Fulfilled by Amazon) Arrival within 7-15 days (Ships from and sold by GOOFIT)