GY6 80cc Set Motor (47mm)

81cc high performance cylinder kit for 50cc GY6 139QMB scooter engines.

This scooter upgrade kit is a high quality kit that is perfect for upgrading your old 50cc 139QMB engine to 81cc so you don’t get left behind in today’s fast paced world.

Installing this upgrade kit will increase your engine bore size to 81cc, and includes an aluminum cylinder, 50 mm piston, piston rings, and gaskets.

After installation, you will see an immediate increase in low end acceleration and an increase in top speed!

This 81cc scooter cylinder kit does not include the cylinder head. Combine this cylinder head with a high performance carburetor and exhaust for an even larger boost in performance.

Note: Please make sure this scooter engine part fits your particular scooter model. Many scooters have the same name but use different engine parts depending on the year of manufacture.

Packing Size: 43*32*25

QTY/CTN: 12Pcs

G. Weight: 12.50Kg