Feature

●Inner Diameter of Cylinder Sleeve: 47mm
●Outer Diameter of Piston Pin: 13mm
●This a Non EGR Cylinder Head, Does Not Have the EGR Port
●Valve Length-69mm, Intake Valve Diameter- 18.5mm, Exhaust Valve Diameter-16mm
●High Performance Upgrade 47mm Rebuild Kit for 139QMB 139QMA Engine


Description

Big Bore Kit Includes:

Cylinder Head Assy with 69mm Valves (Already Installed)

80cc 47mm Cylinder Block

80cc 47mm Piston Set (Piston,Piston Rings,Piston Pin,Piston Pin Clips)

Valve Oil Seals

Gasket Set (Head and Base Gaskets ,Tensioner Gasket ,Exhaust Gasket)

Studs Set (Intake Studs, Exhaust Studs,Exhaust Nut )

You will also get an extra BACKUP Kit include the gasket set and stud set.