Glixal GY6 105cc Scooter Engine 52mm Big Bore Cylinder kit with Piston Kit for 4T 139QMB 139QMA JONWAY ZNEN Roketa Moped

52mm Cylinder Rebuild Kit for GY6 4-Stroke 139QMB Engines

• Important: this kit is only for GY6 4-stroke 139QMB based engines.
• Cylinder inner diameter: 52mm
• Piston pin outer diameter: 13mm
• Kit includes: cylinder, piston, piston rings, piston pin, piston pin clips, valve oil seal, gaskets, tensioner gasket, exhaust gasket, intake & exhaust studs and exhaust nut
• Suits GY6 49cc, 50cc, 60cc, 80cc, 100cc and 105cc engines

Aftermarket parts. Measure your existing cylinder and piston before ordering. Boring out a moped or scooter engine can change its legal class and invalidate its insurance — check the rules where you live. Engine rebuilding is skilled work; have it done by a mechanic if you are not confident.