Marshall Deeptone

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  • stain
    • Jan 2026

    #1

    Marshall Deeptone

    I see Bridge City Cycles is offering Marshall exhaust for older bikes. Anyone here have one or heard one?
  • Rover
    Forum Sage
    Past Site Supporter
    • Mar 2009
    • 1537
    • Central Mass.

    #2
    There is one on EBAY for GS1000 for $450.
    English make?
    http://i632.photobucket.com/albums/u...00080021-1.jpg
    1978 GS1000C
    1979 GS1000E
    1980 GS1000E
    2004 Roadstar

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    • hampshirehog
      Forum LongTimer
      Past Site Supporter
      • Oct 2007
      • 12675
      • Hampshire. UK

      #3
      I have one on my GSX750ET. It's alright. Not too noisy, not too quiet. Not the prettiest pipe in the world but it's no dog either. Fitted with the standard airbox the carb set up is stock and it runs like a champ.
      79 GS1000S
      79 GS1000S (another one)
      80 GSX750
      80 GS550
      80 CB650 cafe racer
      75 PC50 - the one with OHV and pedals...
      75 TS100 - being ridden (suicidally) by my father

      Comment

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

        #4
        Had one on my '79 CBX.
        Side stand and center stand retention, access to oil drain plug and filter.
        Stock airbox and filter...no re-jetting was required.
        I liked the look but found it too quiet.
        2@ \'78 GS1000

        Comment

        • Allie
          Forum Guru
          • May 2010
          • 7682
          • New Jersey

          #5
          What kind of tubes does it use? EL34s?
          "Men will never be free until Mark learns to do The Twist."

          -Denis D'shaker

          79 GS750N

          Comment

          • stain

            #6
            Quieter than the vance/hines?

            Comment

            • wkmpt

              #7
              Originally posted by Allie
              What kind of tubes does it use? EL34s?
              Close, uses 6CA7's...and it likes JJ's better than the Mullards.

              Comment

              • SoanoS

                #8
                I have an old Marshall 4-1 exhaust on my 1982 GS1100G(D?) and it is quite nice. However, this was installed before I bought my GS and I have stock air-box and filter. I am not sure what size jets I have, but do you have any recommendations as I need to open her carbs up for cleaning.

                Comment

                • hampshirehog
                  Forum LongTimer
                  Past Site Supporter
                  • Oct 2007
                  • 12675
                  • Hampshire. UK

                  #9
                  It should be ok with stock jetting if you are running with the standard airbox and filter.
                  79 GS1000S
                  79 GS1000S (another one)
                  80 GSX750
                  80 GS550
                  80 CB650 cafe racer
                  75 PC50 - the one with OHV and pedals...
                  75 TS100 - being ridden (suicidally) by my father

                  Comment

                  • SoanoS

                    #10
                    Originally posted by hampshirehog
                    It should be ok with stock jetting if you are running with the standard airbox and filter.
                    Thank you for your fast reply, much appreciated.

                    Comment

                    • Allie
                      Forum Guru
                      • May 2010
                      • 7682
                      • New Jersey

                      #11
                      Originally posted by wkmpt
                      Close, uses 6CA7's...and it likes JJ's better than the Mullards.
                      I had to look JJ up, you stumped me. They used to be the Teslas. I have a head that needs re-tubing, and maybe filter caps because it's been sitting for so long.
                      "Men will never be free until Mark learns to do The Twist."

                      -Denis D'shaker

                      79 GS750N

                      Comment

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