The front width of a stock ltr450 is 47 and a half inches. I know a lot of trx 450 with plus 1 inch a arms that are 47 and a half inches. The issue with the ltr450 is the rear being a lil over 49 in the rear. I know a modified z400 hub will put the ltr450's rear in at about 47 inches so that would solve the problem with width.