Hi all, Just found a used 503 cylinder which has been fitted with a new piston by our friend Con some time back...

The bore was honed and the new piston has 72.5 written on the top in felt pen. It also has 72,43 stamped into the piston crown.

I have never fitted this item so it is as new, the piston that is!

Offers please to Brian at Reynolds - Towers dot com.

Ta all,