Glixal 47mm Big-Bore Cylinder Kit for GY6 50cc to 80cc Conversion — Complete Top-End Rebuild

Glixal ATMT1-008 is a complete 47mm big-bore cylinder rebuild kit that converts GY6 50cc engines to an 80cc high-performance configuration.

If you need a drop-in replacement to increase displacement and refresh a worn small scooter or ATV engine, this Glixal kit supplies the major internal components and gaskets required for a full top-end rebuild. Designed for many Chinese-made GY6-style scooters and quad bikes, the kit includes the cylinder, piston assembly, seals, studs and exhaust hardware so you can replace the most common wear items in one service session.

What does the Glixal 47mm kit include and why does that matter?

The kit ships as a complete top-end rebuild package so you won’t have to source parts separately. Each component addresses a specific failure point inside the cylinder head and combustion chamber, helping restore compression and reliable sealing after wear.

• 47mm bored aluminium cylinder with compatible mounting surfaces.
• Piston, rings, piston pin and circlips for a correct fit and compression.
• Valve oil seals, intake/exhaust studs, exhaust nut and all necessary gaskets.
• Tensioner gasket and exhaust gasket to simplify reassembly and reduce leaks.

How does the upgrade affect engine size and compatibility?

By increasing the cylinder bore to 47mm, the kit raises displacement into the 80cc range when paired with compatible crank and stroke components. It’s engineered to fit most GY6 49–50cc engine platforms and can also be used in some 60cc setups where bore-only upgrades are common.

• Intended for GY6-based 49cc–50cc engines and many Chinese scooters/ATVs.
• Commonly compatible with brands like Jonway, Roketa, Taotao and similar models.
• Fits engines that accept a 47mm bore; verify your engine’s dimensions before purchase.
• Requires standard GY6 installation procedures; additional carburetor or exhaust tuning may be needed.

What installation details and parts quality should I expect?

The kit includes durable piston rings and a piston pin sized to the cylinder, plus clips and seals to rebuild the top end correctly. Components are intended for direct replacement, but proper assembly practices—cleaning mating surfaces, torqueing to spec and checking clearances—remain essential for longevity.

• Piston pin outer diameter: 13mm to match the included pin and clips.
• High-quality piston rings designed to restore compression and reduce blow-by.

Who is this for? The Glixal ATMT1-008 47mm big-bore cylinder kit is aimed at scooter and small-ATV owners, mechanics and hobbyists who want a reliable top-end rebuild or a displacement upgrade for GY6-style engines. It’s suitable if you’re repairing a worn 50cc engine, preparing a performance conversion, or maintaining a fleet of Chinese-made scooters where quick, complete rebuild kits save time. Note: confirm fitment for your specific model and be prepared to tune carburetion and exhaust to match the larger displacement; professional installation is recommended if you’re not experienced with engine rebuilds.