⚡ Upgrade your ride, own the streets!
This 80cc Cylinder Bore Set is a premium big bore upgrade kit designed for Znen Tommy 50 and other 139QMB series Chinese scooters. Featuring a 47mm aluminium cylinder, piston, rings, gaskets, and all necessary hardware, it delivers enhanced engine displacement and performance for GY6-50 4-stroke engines. Ready for immediate dispatch from the UK, it offers a reliable and complete solution to boost your scooter’s power and longevity.
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