These fit damn near perfectly on top of a 43.5mm cylinder. Had to file the stud holes a bit to make it fit; took all of 20 seconds.
Even with the proper seal, my compression took a massive dump after I put this on.
But hey, now that I'm not just dumping extra fuel out of the joint at the head, I can downjet. Also I can actually set the idle to a reasonable level. Hooray gaskets!
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Sure it is 45mm?
November 24, 2015
taco eater :
DAS Riot from Detroit, MI United States
And not 43mm? 45mm kits for Morinis are a rare bird.
edit treats -- yepp these are the only gasket sets polini has left since the 45mm is such a rare bird. 45mm it is. should be totally fine on 43mm tho!!
Used with Motomatic m48 60cc Airsal Kit 
Sure it is 45mm?