1% Brand New and High Quality!
Cylinder Size: 5mm

Kit Includes:
Head(64mm valves) & Cylinder (5mm ID)
5mm Piston， Wrist Pin， Complete Gasket set
New Rollers， Complete Ring Set， Oil Pump & Drive Gear， Rocker Arms

Chinese Scooter GY6 Big Bore Kit 1cc 5mm Bore
Fits 139QMB & 1P39QMB Chinese Scooters

Note:
The Belt Cover/CVT Cover Gasket is for a Short Case.
Please cheak the picture carefully before you purchase.

Package Included: 1 X Motorcycle Spare Parts Kit as the picture show.