6G Fork swap & Delink

Discussion in '6th Generation 2002-2013' started by Hamish Ainslie, Aug 30, 2023.

  1. Hamish Ainslie

    Hamish Ainslie New Member

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    Afternoon all. I've been looking around the Forum for info on changing the Forks and Delinking the brakes. I'm aware not everyone is a Fan, but its something I'm looking into.
    Will a set of 43mm CBR600F4 Forks, Calipers, and master cylinder be all I need for the Front, and is it a straight swap? For the Rear, I can run 2 lines to the rear brake using a 14mm master cylinder and double banjo bolt? I can get these parts easily if that's all that's needed.
    Thanks.
     


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  2. mello dude

    mello dude Administrator

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    Happy first post......pics of your bike please...
    Yes, F4i forks will drop in, with calipers and master cylinder. Don't forget you will need to come up with brake lines. Then the stock wheel and rotor is used plus OEM triples and bars. Caveat...there is always some gotcha out of the blue..
    You will need a fender too .

    -- Note here...I am not sure but I the older CBR600F4 forks are too short. Someone plz jump in if you know better.

    Rear....yes 14mm master cylinder. Lines options. 2 lines to the rear caliper, 1 line plus a bridge line connecting the center and outer pistons, and number 3, is drilling a hole in the caliper so all 3 pistons operate together, then you can use 1 line and a plug in one of the outlets.
    - I am using a bridge line and 1 OEM line to the rear outlet..... I think there's a photo in my gallery.

    Good luck, it may sound easy, but it's a project.
     
    Last edited: Aug 30, 2023


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  3. squirrelman

    squirrelman Member

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    hacking your bike up like that will cost you alot when you sell it.
     


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  4. Terry Smith

    Terry Smith Member

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    I suspect that you will be able to re-use the 6G fork inners with the CBR lowers and maintain a stock fork length/geometry. The fork length is set by the length of the lower end of the upper connecting with the underside of the top-out spring on the damper cartridge; as long as the springs are in the same place on the damper cartridge you should be able to use the CBR damper cartridge, but you will probably be able to swap the damper tubes over to use the 6G part with the CBR inners if you need to. They are a common diameter and as long as the damper shaft is the same OD they will mix and match.

    You should end up with a spare double banjo bolt when you pull out the linked parts; I re-used that to join the stock rear lines at the new rear master.
     


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  5. Hamish Ainslie

    Hamish Ainslie New Member

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    Thanks for the responses. I had hope it would be a straight swap. I'll measure the fork lengths of both to see if they are the same.
     


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  6. Captain 80s

    Captain 80s Member

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    No. Not really. Nothing needs to be "hacked" and everything is reversible, you would have all the original parts wrapped up nicely in boxes. This mod is desirable to many people.
     
    Last edited: Aug 31, 2023


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  7. mello dude

    mello dude Administrator

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    Oh yeah, Terry reminded me that you can use the VFR upper tubes with the CBR lowers....that's what I did, but VTRs.. duh.
     


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  8. Terry Smith

    Terry Smith Member

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    100% agree. When I did my original 5G fork swap, the end result looked 100% stock as they were all genuine Honda parts of a similar vintage.
     


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  9. Wes Washburn

    Wes Washburn New Member

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    Here's one for you....SWAP THE STEMS!
    Find the front end that you like (Gsxr750 is my personal favorite), disassemble the donor and the VFR ends, take both triple clamps to a local machine shop, and have them press/swap the stems. This will allow you swap virtually any front end. The mid 2000's R6 had high and low speed adjustable dampening, and are some of the most amazing stock forks ever offered BUT I'd replace the springs for a stiffer one, given the difference in weight. I've done this with several resto-mods and usually end up paying for one hour at the machine shop. The new front end will slide right in, uses the oem bearings- so yeah...enjoy:)
     


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  10. squirrelman

    squirrelman Member

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    riders who are modification-mad should know that some fork swaps reduce the amount of wheel deflection possible.
     


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  11. Hamish Ainslie

    Hamish Ainslie New Member

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    Thanks for the info. Luckily I work in a Motorcycle dismantling yard so will see what's about. Cheers.
     


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