81 gs550 jetting question

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  • Oldskoolchopshop
    • Jan 2026
    #1

    81 gs550 jetting question

    Stock 550 1981 header and pod filters. What size jets should I need and where should the air fuel mixture be, cause this thing is way outa wac. Thanks
    Tags: None
    • rapidray
      Forum Guru
      GSResource Superstar
      • Oct 2006
      • 8195
      • So Cal
      #2
      The FIRST thing you need to do is find a jet kit, and install that. You need adjustable needles to tune those carbs correctly. Trust me, I KNOW of what I speak!!
      Ray.

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        • LordWasr
          #3
          I have the same bike and same problem lol. I'm interested in what kind of jet kits to get, please link if you can thanks!

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            • CafeRookie
              Forum Apprentice
              • Dec 2020
              • 26
              • MN
              #4
              I know this thread is from a long time ago...but I'm in the same boat. Anyone have answers?

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                • slayer61
                  Forum Mentor
                  • Jun 2018
                  • 302
                  • Stuck in Lodi, again
                  #5
                  Ray's advice is still valid.
                  Paul


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