Cylinder kit ATHENA Big Bore 120cc 55mm for Honda MBX80, MTX80 2-stroke LC

Athena cylinder kit increasing displacement to 120cc with a 55mm bore (diameter), suitable for Honda MBX80 and MTX80 LC.
Externally, the cylinder matches the original in size and shape, including the reed valve box, outlet and cooling water connection, but the crankcase still requires machining to mount this cylinder.
Technical specifications:

Cylinder: aluminium, coated

Cooling: water-cooled

Bore: 55mm (diameter)

Piston pin diameter: 12mm

Number of transfer ports: 6

Piston base shape: domed

Number of piston rings: 2

Thickness of piston rings: 1.5mm, chromed

Outlet: 1x oval

Cylinder head: Not included!

Scope of delivery as shown in the product picture, including gaskets, small parts, piston and gudgeon pin.