Cylinder Head Valves and Rebuilt Kit 61mm Big Bore kits with Piston and Ring Assy GY6 125cc/150cc Engine Upgrade to 180cc for 152QMI 157QMJ Engine Chinese Scooter Moped ATV Go Kart Quad

Cylinder Head Valves and Rebuilt Kit 61mm Big Bore kits with Piston and Ring Assy GY6 125cc/150cc Engine Upgrade to 180cc for 152QMI 157QMJ Engine Chinese Scooter Moped ATV Go Kart Quad

• COMPATIBILITY: Cylinder fits for GY6 4 stroke 125cc/150cc engine for most of chinese scooter, atv and go karts.Noted:It is upgrade cylinder kits, the outer size of the cylinder is 63.8mm, the normal gy6 engine 125/150cc cylinder outer size is 61mm, you have to bore out the crank case for this to fit on most bikes with machine shop work
• SIZE: Cylinder Bore:Upgrade from 57.4mm to 61mm, outer size: 63.8mm Cylinder kits with more power
• HIGH PERFORMANCE:Cylinder kit is strong power,super heat dissipation,durable and oil saving,stable performance
• HIGH QUALITY:High grade cylinder components, featuring high strength, corrosion resistance, and durability, with effective heat dissipation design ensuring dependable operation and longevity
• PROFESSIONAL AFTER SALES:We value your shopping experience and strive to offer a high-quality product and service.If you have any problems or dissatisfaction after receiving the products, please contact us directly