I have a 99' Kodiak 4x4. I have an after merket muffler and 2 inch larger shock, but my 26x13x12 vampire asx still rubs the tire and it is starting to wear on both the tire and muffler. I know that the nut outside is a 17 mm but how big is the stud and how much longer do I need to get to have atleast 1 inch of space? If so where can i get them ?

 

IMO, your best bet is just adding a 1" wheel spacer...