Compare webshops (1)
Sponsored links · Some shops pay us a fee
Sort by:
Shops with other sizes
【Fit for 】 Upgrade GY6 50cc 4-stroke 139QMB engines 【Specification】Cylinder bore:50mm, Cylinder head:50mm, Piston pin:13mm, 64mm valve, it will make the GY6 50cc engine more power to climb hill. 【Parts included】Cylinder head comp, cylinder body, piston, piston pin, piston ring, pin clip, valve rockers, oil pump, oil sprockets, the whole gaskets, roller, Bolt. 【Quality Guarantee】Please feel free to contact us, if you have quality or using problem, we will reply in 24 working days, customer 100% satisfied shopping experience will be our first goal.