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Gsxr forks, has anyone ever finished this swap and rode it?

Discussion in 'The Garage' started by XsJosh, Mar 30, 2020.

  1. XsJosh

    XsJosh XS650 Enthusiast

    Just like the title says. I have searched here and all over and all I find are posts from 2012 or so that never seem to have real details about what it takes to finish the job and how it rides afterwards. Is this a beneficial swap, or is there a reason no one seems to talk about it anymore.
     
    halfmile likes this.
  2. Ratranger

    Ratranger XS650 Junkie Top Contributor

    I've got zx6r big piston forks on mine. They are shorter than stock forks, can be a challenge to do a fender that isn't really modern looking, and will make any shortcoming on the rear suspension more noticeable. Plus they can look bulky and out of proportion depending on the rest of the build.

    You can buy a custom stem, swap bearings, custom triple clamps etc to swap them on. Depends on budget and ultimate goal.

    Mine rides pretty good, but suspension on both ends was swapped. I had to really lower the rebound/compression/preload adjusters to smooth out the ride.
    20190727_134156~01.jpg
     
  3. halfmile

    halfmile XS Builder XS650.com Supporter Top Contributor

    1,125
    3,537
    263
    kansas
    I rode this one a short distance before I rebuilt it. GSXR1000 forks. It felt awkward to me with the 17" front wheel but I didn`t give it much of a chance. Around the block a couple of times then rebuilt it. Great brakes though.:shrug:
    80 Tracker 008.JPG
     
    arcticXS likes this.
  4. Ratranger

    Ratranger XS650 Junkie Top Contributor

    Oh, and if you want spoked wheels be ready to pay out the nose unless you can machine. I modified a cb550f hub to work, and had the hubs front and rear both laced to 17s
     
    gggGary and halfmile like this.
  5. bikefreak69

    bikefreak69 XS650 Enthusiast

    If you go 19 Inch front,you will need new clamps to go with shorter forks, you will need a larger master cylinder to run the 4 piston caliper from the GSXR front end.I did the swap first and with GSXR clamps and a 19 inch wheel the trail is reduced and handles badly. 55 mm offset clamps should do the trick.
     
  6. Sir Real Ed

    Sir Real Ed XS650 Enthusiast

    both bikes look great. drilling holes in the stock Yamaha mag wheel is slick.
     
  7. Sir Real Ed

    Sir Real Ed XS650 Enthusiast

    are those stock XS 650 Special pipes? Nice match up with tracker seat.
     
  8. You can use stock wheels just have to make spacers for the difference of the axles
     

    Attached Files:

    Hightower-Ash98 likes this.
  9. arcticXS

    arcticXS XS650 Guru Top Contributor

    More offset in the triples will reduce trail, and larger wheels will increase trail, so I don't quite follow?
     
  10. phil240

    phil240 XS650 Enthusiast

    This is an old DaddyG build he did for me, probably around 2009/2010. With the hardtail it rode ok, think it just takes a different bearing if you use the GSX trees and forks.


    Sorry just remembered this was a kz not an xs
     

    Attached Files:

    Last edited: Mar 31, 2020
  11. bikefreak69

    bikefreak69 XS650 Enthusiast

    Maybe I said it wrong but I did the math and rode it with GSXR clamps and 19 inch front and it handles very badly with GSXR 20 mm offset clamps and stock yamaha is nearly 50 mm offset
     
  12. arcticXS

    arcticXS XS650 Guru Top Contributor

    That seems very reasonable. Seems your bike ended up with too much trail, due to little triple offset, a larger wheel, and more rake than a GSX-R
     
  13. bikefreak69

    bikefreak69 XS650 Enthusiast

    Yes, and I kind of just wanted to see what truly shitty handling felt like, so now I know. Total instability.
     
  14. Hightower-Ash98

    Hightower-Ash98 XS650 Addict XS650.com Supporter

  15. XsJosh

    XsJosh XS650 Enthusiast

    I've started my own GSX-R swap, I plan on going through all the steps and pieces I needed when I tear it down for paint and final assembly. IMG_20200425_151753_069.jpg
    75 with 94 GSXR750 forks, already changing the fender.
     

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