I was told the life expectency for a buell xb12r was about 50 thousand miles before a rebuild was needed. Once i get to the point that i will need a rebuild what is the biggest bore kit i can put on a xb12r?;)
I think Revolution Performance has the biggest kit.
Revolution Performance - 1474 cc kit
http://www.revperf.com/XB9-XB12/xbPerformKits.html
I think these guys offer the biggest kit (1474cc) it requires that they bore your cases, and I cant comment on reliability, but I have spoke with all of the above mentioned suppliers and these guys seem to know their stuff.
crap! i've been beaten!
If I remember correctly, "Keppi's" bike has the 1250 heads.
what would be the top two biggest on a 9s?
1170cc is the biggest ive seen for a 9, still requires machining the cases
any ideas how much?