Airsal Eurokit 50cc 39mm Cylinder Kit – GY6 Q139MB 4-Stroke – Aluminium Nicasil

The Airsal / Eurokit 50cc 39mm cylinder kit is a high-quality replacement cylinder for GY6 Q139MB 4-stroke engines.

Manufactured from aluminium with Nicasil coating, this cylinder offers excellent heat dissipation, reduced wear and longer service life compared to traditional cast iron cylinders.

With a 39 mm bore, it maintains the original 50cc displacement and factory performance. Ideal for engine rebuilds or replacing a worn or damaged cylinder.

Technical specifications:

• Brand: Airsal / Eurokit
• Engine type: GY6 Q139MB 4-stroke
• Displacement: 50cc
• Bore: 39 mm
• Material: Aluminium with Nicasil coating
• Tuning level: Standard replacement

Supplied including:

• 39mm aluminium Nicasil cylinder
• Piston
• Piston rings
• Wrist pin
• Wrist pin clips
• Head gasket
• Base gasket
• Cam chain tensioner gasket

Also known as Airsal 50cc GY6 cylinder, Eurokit Q139MB 39mm cylinder kit or GY6 aluminium Nicasil 50cc replacement cylinder.