CDHPOWER 80cc66cc Windowed Piston Set 66cc80cc Gas Motorized Bicycle

The windowed 66cc piston kit is only for 80cc/66cc engine kits, High Hole Piston; 10mm piston pin; compatible with long connecting rod ONLY; Width of the ring is 2mm, DOSE NOT WORK WITH stocked manifold intake,Buyers must use high performance intake;, Work only with better performance manifold intake such as G2 reed,dio reed etc and better performance carburetor such as RT carburetor, CNS carburetor or other ones, Any questions,please contact us firstly! we can help you solve the problem until you are satisfied.