Restore your engine’s performance with this complete GY6 150cc stock piston and cylinder assembly. Featuring a 57.4mm standard bore, this top-end rebuild kit includes the cylinder, piston, rings, wrist pin, circlips, and gaskets for a hassle-free installation. Designed for 4-stroke GY6 150cc engines commonly found in scooters, ATVs, and go-karts. Perfect for replacing worn components or rebuilding your engine to factory specs.
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Compatible with all standard 150cc GY6 4-stroke engines
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Includes cylinder, piston, piston rings, wrist pin, circlips, and gaskets
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Standard 57.4mm bore diameter
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Direct OEM replacement — no modifications required
