02-04-15, 06:49 PM
Rather than buying a replacement exhaust stud, get some M6 stainless threaded rod and cut that to length. I also prefer stainless dome nuts to the horrible rust-prone nuts Yamaha supply. If you use stainless for both the stud and the nuts, just make sure they're dissimilar grades (e.g. A4 and A2) otherwise they can seize.