GOOFIT 52.4mm Bore Piston Rings Assembly for 110cc Taotao Roketa Sunl Coolster SSR Dirt Bikes Go Karts ATV Piston bore size 52.4mm,pin length 41mm,pin diameter:14mm Fit for 110cc horizontal engine,does not fit for GY6 or vertical engine Package including piston,piston rings,piston clips,piston stud. Arrival within 1-2 days (Sold by GOOFIT and Fulfilled by Amazon) Arrival within 7-15 days (Ships from and sold by GOOFIT)