Aftermarket exhaust won't fit...

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  • midnightcafe
    • Feb 2026

    #1

    Aftermarket exhaust won't fit...

    So I bought a MAC exhaust from a GSR member, the headers line up and go into place. The issue I'm having is that the exhaust flanges won't go up against the motor, by about a half inch! I wish I had pictures but the pipe ends seem too long for the exhaust ports. Why is this? Am I supposed to use new bolts and let the flanges bolt on from that distance?
  • 1948man
    Forum Sage
    Past Site Supporter
    • May 2009
    • 4660
    • Florida

    #2
    You could use longer bolts and pick up some kind of spacers from Home Depot or that type store. Maybe not ideal but probably okay.
    1983 GS 1100 Guided Laser
    1983 GS 1100 G
    2000 Suzuki Intruder 1500, "Piggy Sue"
    2000 GSF 1200 Bandit (totaled in deer strike)
    1986 Suzuki Cavalcade GV 1400 LX (SOLD)

    I find working on my motorcycle mildly therapeutic when I'm not cursing.

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    • Agemax
      Forum Guru
      • Apr 2008
      • 8371
      • plymouth uk

      #3
      contact the GSR member you bought it from and ask him how he managed to fit it. you may be making a silly mistake or he may have taken you for a ride by selling you the wrong pipe
      1978 GS1085.

      Just remember, an opinion without 3.14 is just an onion!

      Comment

      • Arkmage

        #4
        Originally posted by midnightcafe
        So I bought a MAC exhaust from a GSR member, the headers line up and go into place. The issue I'm having is that the exhaust flanges won't go up against the motor, by about a half inch! I wish I had pictures but the pipe ends seem too long for the exhaust ports. Why is this? Am I supposed to use new bolts and let the flanges bolt on from that distance?
        I think this is normal for aftermarket pipes. Here is a pic of what my Vance & Hines looks like on the GS. My last Honda had bassani pipes that were the same way. You probably just need longer bolts that would normally come with the exhaust but since it's used they may not have been included.

        Comment

        • steve murdoch
          Forum Guru
          Past Site Supporter
          • May 2004
          • 8491
          • St. Catharines, On.

          #5
          Just a thought, did you put new exhaust gaskets in without removing the old ones?
          2@ \'78 GS1000

          Comment

          • midnightcafe

            #6
            Originally posted by Arkmage
            I think this is normal for aftermarket pipes. Here is a pic of what my Vance & Hines looks like on the GS. My last Honda had bassani pipes that were the same way. You probably just need longer bolts that would normally come with the exhaust but since it's used they may not have been included.

            Okay, this is what it about looks like. I trust the member I bought it from, no way he took me for a ride. Thanks a lot Arkmage, this really helps! (I'm under pressure to move it out by tomorrow by my boss while I'm renovating my basement, yadayadayada)

            Comment

            • focus frenzy

              #7
              thats the way it is with the Mac headers on both of mine.

              Comment

              • jwhelan65

                #8
                My Vance and Hines on my 700 is the same way...no issues

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