Dave from wiseco was supposed to check on 1000 of them to be made and call me back with the info,hmmph. there's options tho. the sleeve is 47mm, but it can be 48, 49,50 or bigger. it's also steel, but stock rings can be hardened or tempered with heat, if moly rings for 47mm can't be found. this jug is not dead in the water.
lemme check Wiseco and also what Italian mopeds have going
Ohhhh! I thought you said the fit was looser than stock. Well, it really is all good then! You'll have no problem with blow by and the rings are cheap enough to replace whenever you want.I see what ya mean.
I put the stock piston and rings into the steel lined cylinder and really it was a tight fit,
I'd say a bit tighter than the original chromed cylinder fit.
I thought of actually sort of smoothing over the sharp edges and boiling them in castor oil slowly overnight.
Meh, who knows what i'll do
But i would like to find and try the chrome faced rings sometime.
Ride Safe FOTI!