Would this work? GL500 forks
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  1. #1
    Member dirtnap's Avatar
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    Would this work? GL500 forks

    I know that swapping GL500 forks into a CX500 for the purpose of gaining dual brakes can be a problem. Research that I've done shows that the GL forks are longer and running the stanchions up into the top clamp to alleviate that may pose some problems with gauge clearance and possibly steering. What I have not seen is pulling the stanchions out of a CX fork and installing them into GL sliders to maintain the original ride height.
    I have a donor GL that I picked up for some parts for my future GL650 build and thought about swapping the front end onto my CX500C ('81 with 35mm forks).

    There must be something that I'm missing since I have not seen this swap before. Can anyone shed some light on this? Can it be done safely?
    1981 CX500 Custom, some mods
    1983 GL650 awaiting mild custom build
    1982 GL500 nice parts bike

  2. #2
    Administrator ChopperCharles's Avatar
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    GL tubes are larger diameter, so you're SOL there.

    Charles.
    Visit my Blog: Modified Motorcycles By ChopperCharles at http://choppercharles.com

  3. #3
    Member dirtnap's Avatar
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    Nope, the '81 CX has the same size tubes
    1981 CX500 Custom, some mods
    1983 GL650 awaiting mild custom build
    1982 GL500 nice parts bike

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  5. #4
    Senior Member Randall-in-Mpls's Avatar
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    Check a parts fiche to see if the internals are the same.


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  6. #5
    Member Gobsmacked's Avatar
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    For what it's worth, I recently swapped a 81 GL500 front end onto a 80 CX500D. The bushings and the lower end of the tube where different, can't comment on the 81 CX500.



    Quote Originally Posted by dirtnap View Post
    I know that swapping GL500 forks into a CX500 for the purpose of gaining dual brakes can be a problem. Research that I've done shows that the GL forks are longer and running the stanchions up into the top clamp to alleviate that may pose some problems with gauge clearance and possibly steering. What I have not seen is pulling the stanchions out of a CX fork and installing them into GL sliders to maintain the original ride height.
    I have a donor GL that I picked up for some parts for my future GL650 build and thought about swapping the front end onto my CX500C ('81 with 35mm forks).

    There must be something that I'm missing since I have not seen this swap before. Can anyone shed some light on this? Can it be done safely?
    1974 - Honda MT125 Found under a deck currently a WIP)
    1980 - CX500 Deluxe (Phase 3 Complete)
    1990 - Kawasaki ZX-7 Ninja (Vintage Race Bike)
    2003 - Honda 954
    2010 - Roadking Classic
    2007 1098 (Track Bike)

  7. #6
    Senior Member Manzanita's Avatar
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    Yes, I'm in the middle of a similar project, trying to use longer 35mm cb650 forks on a 1981 cx500 custom (leading axle design on both). On my super-lazy first attempt I am trying to leave the left fork all cx500 and only swap the right fork lower from the cb650 (since all you really need are the mounting holes for the caliper bracket). Well one issue I have is I had to drill new holes for the fender since the cb650 fender mount holes are higher up and do not line up to the cx500 fender holes. Yes, I'd rather drill two holes versus take apart the left fork and swap the lower section.

    And it turns out that the cb650 wheel I bought is wider than my cx500 wheel, and since I don't have the cb650 triple-tree, that dual disc wheel would not work... however it was super easy for me to swap out the right (second) disc from the cb650 wheel and add it to my existing cx500 wheel. But not sure if the horizontal spacing of the discs and calipers is going to work out when I put everything together... so to answer your question: not sure yet!
    1981 CX500 Custom
    2014 Zero S

  8. #7
    Member dirtnap's Avatar
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    I picked up this GL500 parts bike mainly for the tank (which is better by far than the one on my 650) and the fairing which is near perfect. For what I paid for the parts bike I figure I'm way ahead of the game already. I figure if the forks would work on my CX that would be even better. More brakes are always better right? So that's where I'm at, just researching. I certainly don't need any more projects this year!
    I compared the parts fiches for both forks and while I didn't go part for part, they certainly appear very similar. The springs are the same part number, I know that.
    1981 CX500 Custom, some mods
    1983 GL650 awaiting mild custom build
    1982 GL500 nice parts bike

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