Bore: 52.4mm (about 2.06″) This item fits for 110cc Chinese ATV Go Karts scooter engine Blot hole spacing(A):1.74″ ; Blot hole spacing(B):2.00″ ; Blot hole spacing(C):1.87″ ; Diameter(D):2.06″ ; Blot hole spacing(E):2.00″ ; Blot hole spacing(F):2.00″ ; Blot hole spacing(G):1.83″ ; Blot hole spacing(H):1.83″ ; Arrival within 7-15 days (Ships from and sold by GOOFIT) Color:52.4mm Cylinder Head pls confirm The size of the product meets your requirements before you purchase Note:please allow 0.5-1 inch difference due to manual measurement.1inch=2.54cm Replacement for: Taotao 110 SSR 110 Kazuma Falcon 110 BMS 110 Sunl 110 Coolster 110 and other 110cc ATV dirt bike Package Included: Cylinder Head x 1pc Keychain x 1pc About After-sales service: First of all,we sincerely apologize to you for returning exchange or refund caused by any reason.Please be assured,no matter what the problem.Please contact us first,we will do our best to solve any problem for you.We attach great importanc