Scooter-ATV Parts

S0273

72cc Scooter Big Bore Kit W/ Head Cam GY6 Coil AC CDI Performance Exhaust

Pistons

Fits many Chinese Scooters.
Free Shipping To Continental US
Please note, any product that is returned will be refunded minus the original shipping costs.(i.e. The cost to ship the order to you)
If you are ordering electrical components please make sure which CDI you need (AC or DC) before you order. Due to the eccentric nature of Go Karts wiring there is no guarantee that our CDIs or Coils will work with Go Karts.
Please Note: many photos are stock images and although no functionality will change, the part you receive might vary in color or aesthetic appearance.

72cc GY6 QMB139 Four Stroke Big Bore Kit 72cc 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 angle. Re Jetted Carburetor with a 90 Main and a 32 Pilot Jet. 31,000 Volt HEI Coil. Performance AC CDI With 4 degrees of advance and no rev limiter. This combination will fit many 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. Please Note: All head pipes and brackets are chrome plated carbon steel.

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