Longer A2C Fork on Early MTBs (1990-1995)- Mtbr.com
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  1. #1
    Formerly PaintPeelinPbody
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    Longer A2C Fork on Early MTBs (1990-1995)

    I've got a 1990 Marin. 385ish a2c original rigid fork.

    When I search for pictures of this bike, I see quite a few examples in the 1990-1992 years of these frames with early suspension forks - 400-410 A2C. Including Marin themselves!

    Longer A2C Fork on Early MTBs (1990-1995)-marin-bikes-jvanhorn-7781-780x520.jpg

    I don't want a suspension fork this bike, but what I do want is more tire clearance - ie the ability to run 26x2.8 tires.

    Luckily, the new obsession of hipsters (of which I'm one) for small wheeled bikes has Crust making two suitable forks - the Evasion 65mm offset fork (400m a2c) and the segmented fork (408mm a2c).

    Anybody know of any other, cheaper (under $100) forks that'll fit 26x2.8 while being around 400mm a2c?
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  2. #2
    -bustin punks
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    I ran a 27.5x 2.3 tire on one of the 26er 410mm a-c Kona/Carver unicrown forks that you can grab for around $90 at bikeman.com



    2.8" might be pushing it though - depending on rim width.


  3. #3
    No known cure
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    Here's the original fork. The stem will be the same matching green. I no longer have mine so I can't check the serial number or A2C.
    Attached Thumbnails Attached Thumbnails Longer A2C Fork on Early MTBs (1990-1995)-marin001.jpg  

    Longer A2C Fork on Early MTBs (1990-1995)-ag-016.jpg  

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  4. #4
    Hardtail Steel Forever
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    Are you switching to threadless? Also aren't these 1" steerer? I don't think there's any way you're going to find a threaded fork that fits 2.8. You might be able to get something to clear a 2.3 - 2.35 on there, but I don't think something threaded that clears more than that exists. Other option would be custom, but that's obviously going to be expensive.
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  5. #5
    Formerly PaintPeelinPbody
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    I think these are 1 1/8th, although my 1" quill stem adapter works fine. I think it's because the outside diameter is 1 1/8th and the internal diameter is 1". Honestly not 100% sure though. Maybe it's just a case of quill adapters being not so particular.


    I could easily switch to threadless - I've got spare headset.
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  6. #6
    -bustin punks
    Reputation: fatchanceti's Avatar
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    I have a 1" fork that will fit a 2.8 tire (pretty sure) but it's unthreaded. The axle to crown is also a bit long at 425mm I believe. Carbon legs, alu crown, chromo steerer. Not vintage at all, but would get the job done - and I imagine the wall thickness on the steerer is thick enough to be threaded. It's also disc only - but I think you can find versions of it with canti posts too. Anyway, I could get it to you for under a hundred easily if you think it might work.

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