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47MM Big Bore CYLINDER Kit GY6 50cc to 80cc Scooter Moped 139QMB

Product Description

Change the size of your engine, and feel the POWER.
Give your machine the new power and torque it really deserves, and have more fun with the power at your finger tips.
1x Cylinder Block.
1x Piston.
1x Complete Ring Set.
2x Circlips.
1x Piston Pin.
2x Head Gasket Set.
Head Cylinder NOT INCLUDED.

Size:

Change from 50cc (39mm*41.1mm) to 80cc (47mm*53.2mm).

Works with stock Cylinder head.