80cc Big Bore Kit Head GY6 Coil CDI Performance Exhaust AC

80cc GY6 QMB139 Four Stroke Big Bore Kit 80cc 47mm Increase Power by up to 30% and torque by up to 50% Each kit includes: Milled Emissions style head with 18mm intake 16mm exhaust valves and high performance springs. Cylinder, piston, piston rings, piston pin, and clips Top end gaskets Performance Camshaft with 4.75mm intake stroke 4.55 exhaust and 123 degree lift angle31,000 Volt HEI Coil Performance AC CDI With 4 degrees of advance and no rev limiter This combination will fit almost all Chinese brands, such as TaoTao, Buyang, Coolsport, NST, BMX, Kazuma, Sunl, ROKETA, AIM-EX etc. May not work on your Lance, Kymco or Zhongchen model scooters. K&N Style Filter (colors can vary) Performance Exhaust Kit ¡¡