Been trying to do as much research as possible but haven't had much luck in getting nitty-gritty details on specific differences in the Buell X1 and XB12 motors. I've seen any where from 88hp to 113hp and 76ftlb to 89ftlb and a decent increase in RPM's from the X1 to the XB12. Looking to safely get all the ponies I can out of this little brute and some extra rev's would be nice too! Any techy guru's on here able to denote the main component differences in those motors and what parts if any are interchangeable so I can beaf up my little X1? Thanks all! Shiney side up!!!