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Description: Crankcase 63mm Bore A-Block 54mm GY6 longcase. The crankcase bore is a 63mm opening and can fit 54mm A-Block 61mm cylinder and 61mm cylinder head.NOTE: This is NOT a complete engine. Need to reuse donor parts from A-Block (54mm) or B-Block (57mm) ..

Description: Naraku Cylinder Head Wear-Resisting 2 valves with a larger 27.5 intake / 23 exhaust ports will allow your GY6 cylinder to breathe better! Works great with Naraku Cylinder 63mm 180cc Big Bore Kit w/Forged Piston. When changing a cylinder kit or an exhaust, it's a clever idea to pick..

Description: NCY 61mm 171cc Cast-Iron Cylinder Kit with a Cast Aluminum Piston. Give your GY6 based scooter some serious power with this bolt-on 171.3cc kit for most GY6 125/150cc engines. As far as we know, this is the only 61mm cylinder kit for the GY6 engine that exists in the US. With most 61mm ..

Description: NCY 61mm Cylinder Head Wear-Resisting 2 valves with a larger 27.5 intake / 23.5 exhaust ports will allow your GY6 cylinder to breathe better! Works great with NCY Cylinder 61mm 171cc Big Bore Kit w/Cast Piston. A 10mm diameter head allows for extra clearance between your wrench and the ..

Description: Complete NCY Engine Gasket 61mm Set. Includes crankcase-right, head, base, exhaust, intake, secondary air, tensioner, time cover, transmission, and valve cover gaskets.NOTE: Recommend prep clean with alcohol the metal cylinder gasket prior to applying copper spray on metal cyl..

Description: SSP-G Cylinder Head Wear-Resisting 2 valves with a larger 27.75 intake / 23 exhaust ports will allow your GY6 cylinder to breathe better! Works great with Naraku Cylinder 63mm 180cc Big Bore Kit w/Forged Piston. When changing a cylinder kit or an exhaust, t's a clever idea to pick ..

Description: High-Quality Taida Cast-Iron Cylinder 61mm 171cc with Cast Aluminum Piston for GY6 125/150cc + engines. The cylinder bore is 61mm. Taida 61mm Cylinder Big Bore Kit is suitable for all air-cooled 4-strokes; 125-150cc Kymco engines (scooters), and most Chinese imported vehicles GY6 125/15..

Description: High-Quality Taida Cast-Iron Cylinder 61mm 171cc with Forged Aluminum Piston offers better durability and reduced friction for GY6 125/150cc + engines. The cylinder bore is 61mm. Taida 61mm Cylinder Big Bore Kit is suitable for all air-cooled 4-strokes; 125-150cc Kymco engines (scooters..

Description: High-Quality Taida Cylinder Head 61mm 171cc with large 2-Valve 28mm intake and 23mm exhaust and improved oversize valve ports for 54mm stud-spacing A-Block GY6 engine type; Chinese scooters, quads, buggies, many others listed below.This Taida Cylinder Head 61mm 2V fits the Tai..

Description: High-Quality Taida Cylinder Head 61mm 171cc with large 2-Valve 28mm intake and 23mm exhaust and improved oversize valve ports for 57mm stud-spacing B-Block GY6 engine type; Chinese scooters, quads, buggies, many others listed below.This Taida Cylinder Head 61mm 2V fits the Tai..