Piston ring compressor [2 strokes]

Piston ring compressor for trials motorcycles.
There are also a piston base for easyer assembly of cylinder.
Sure will fit many enduro and road motorcycles with similar piston diameters as below:

Filename
engine piston
CC diameter
80 44,5mm
125 54mm
66mm
250 71-73mm
270 74mm
280 76mm
290 76mm
300 79mm
321 83,5mm

If the one you need is not covered, scale it on slicer...