Upgraded the Cobra IRS with Poly subframe, control arm bushings and Brembo rear brake - Page 2

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  1. #16

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    Quote Originally Posted by cobraracer46 View Post
    jrgoffin, I remember a few years ago you mentioned on your site the possibility of G-Force engineering producing a half shaft kit for the 99-04 Cobra mustang and now its reality. As mentioned on jrgoffin's site, the unequal diameter half-shafts are the magic behind curing the hopping tendencies of the Cobra IRS.
    Definitely might have to check these out as a necessary upgrade even though I don't drag race (they should have been this way from the start!). Since I'll probably be replacing my cross-axis joints next year, may as well do the bearings and think about these axles as well. I did also send G-Force an e-mail to see if they have any better pictures, but if they are as good as the S550 version made for FR, then I know they'll be nice! I think they just started shipping these last week, so hopefully more details will be out there soon.

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  3. #17

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    The new axles have started to ship. The size difference on them is not extreme, but they definitely are side specific.

    Here's a pic from the site that is now up:


  4. #18
    Senior Member Array cobraracer46's Avatar
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    Hopefully within the next year, I can upgrade my Cobra with a set of the G force shafts! It seems like the round of upgrades never ends, but upgradeability is what is cool about 99-04 mustang in that you can update them and improve them rather than trading them up for a newer model. Imagine if the 99-04 mustang was like an iPhone or BMW/Mercedes that you would have replace every couple of years because it quit working right and no upgrades are available!

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  6. #19
    Senior Member Array cobraracer46's Avatar
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    Recently did a minor upgrade to the IRS in the form of a Maximum Motorsports coil over conversion.

    Maximum Motorsports IRS coil over kit with Bilstien HD shocks and 500 pound springs
    Attachment 168873


    it was easy to remove the rear springs with a loaner spring compressor from the local auto parts store
    Attachment 168881

    reinforcing the shock eyelid
    Attachment 168897

    Finished product
    Attachment 168889

    Overall impressions: Super easy to install. Plus, its a very high quality kit as with everything Maximum Motorsports makes and the car rides so much nice now.
    Last edited by cobraracer46; 07-02-2018 at 05:20 PM.

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