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The cylinders are fine bored, deburred and honed in a german professional company.

To determine the correct piston play we need the exact piston, that is going to be used for the cylinder. We will certainly help in determining correct play.

up to 50 mm bore - 69 EURO

up to 80 mm bore - 75 EURO

over 80 mm bore - 80 EURO

If i.e. only one or two hundreds of a millimeter are honed the price is below 50 EURO.

It takes 6 - 10 days, if the piston is at hand.





Oversize Pistons for the different models should be available most of the time.


Fresh honed 133 ccm Polini: