Antidive Question

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  • dragonpaul
    • Feb 2026

    #1

    Antidive Question

    Hi all, ive got to change a leaking fork oil seal, on my GS 750 EZ, the question is regarding the Antidive unit on the front of the fork, can i just undo the bolt that joins the antidive, and if so will it start leaking brake fluid everywhere, is there a correct method in changing a fork oilseal on one of these bikes, any tips would be helpful, also ive purchased a pair of replacement oilseals on ebay, thinking they would be OEM seals, but when they arrived they turned out to be made in italy, getting OEM parts from USA is expensive, plus the cost of shipping, around 80 to 90 dollars for fork oilseals, is there a dealer anywhere that can supply parts for a better price, would the seals from italy be ok.
  • Rob S.
    Forum Guru
    Past Site Supporter
    • Dec 2013
    • 9412
    • New York City

    #2
    I can't answer your question, but I can tell you that when I bought my 1100EZ eight months ago, it needed fork seals to pass inspection. The seals were less than $10, the installation was $300.
    1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

    2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

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    • jwhelan65

      #3
      If you remove the anti-dive line it will in fact leak brake fluid everywhere. I removed mine all together.

      Comment

      • Grimly
        Forum Guru
        Past Site Supporter
        Super Site Supporter
        • Sep 2012
        • 5771
        • Ireland

        #4
        Originally posted by dragonpaul
        Hi all, ive got to change a leaking fork oil seal, on my GS 750 EZ, the question is regarding the Antidive unit on the front of the fork, can i just undo the bolt that joins the antidive, and if so will it start leaking brake fluid everywhere, is there a correct method in changing a fork oilseal on one of these bikes, any tips would be helpful, also ive purchased a pair of replacement oilseals on ebay, thinking they would be OEM seals, but when they arrived they turned out to be made in italy, getting OEM parts from USA is expensive, plus the cost of shipping, around 80 to 90 dollars for fork oilseals, is there a dealer anywhere that can supply parts for a better price, would the seals from italy be ok.
        My local non-specific dealear can get most things, but not as cheap as ebay and I'd be surprised there's not a general bike dealer near you who can't get routine stuff like fork seals. Usually Athena brand, but I've got mixed feelings about them. For my next fork seals I'll mail order from Franco's Motorbikes in London, who I've had a decades-old relationship with.
        www.francosmotorbikes.com - they'll send across the water, no problem, and not charge much for it.
        Dave
        '79 GS850GN '80 GS850GT
        Only a dog knows why a motorcyclist sticks his head out of a car window

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        • dragonpaul

          #5
          Thanks Dave, I will look on the link and see if they can supply OEM replacement parts.

          Paul.

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          • dragonpaul

            #6
            does the antidive unit come apart without leaking brake fluid, I need to remove the fork legs.

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            • dragonpaul

              #7
              I will try and source OEM parts from a local supplier, shipping is expensive, there must be a dealer somewhere in Ireland or the UK who can supply OEM parts for my bike.

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