DIY Koni Sport Shocks Install
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This is a discussion on DIY Koni Sport Shocks Install within the Suspension and Handling forums, part of the Tutorials & DIY category; Big-E, wrxracer519, and I installed a set of off the shelf Koni Sport shocks into my 2011 WRX over the ...

  1. #1
    Registered User Annihilator817's Avatar
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    DIY Koni Sport Shocks Install

    Big-E, wrxracer519, and I installed a set of off the shelf Koni Sport shocks into my 2011 WRX over the weekend.

    It seems the biggest reason that people pass over Koni's in favor of cheap knockoff 'coilovers' or inferior plug and play struts is because the Koni's require minimal fabrication. This short write up should put to rest any fears that people might have about the install.

    For the rear:


    Disconnect the swaybar.




    Jack up the car, and remove the rear wheels (use jackstands and wheel chocks!)








    Remove all of the interior panels from the trunk.






    Remove the OEM coilover shocks. There are two nuts inside of the trunk compartment that hold the top of the shock. And there is one bolt that holds the shock to the control arm. Remove these.





    I won't go into detail about how to disassemble the shocks, its pretty straightforward, and there are many writeups all over the interwebs. This is the same process as a simple spring install on the rear.

    I will note that although the springs are not under much load, a spring compressor is very handy, and probably an absolute necessity on the rears.

    Remove the OEM spring from the OEM shock, and replace it with the new shock from Koni.





    Reinstall the coilover shock.



    Reconnect the swaybar, put the wheels back on, put the trunk panels back on, and you’re done with the rear.
    Good judgement comes from experience, and experience comes from bad judgement.

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  3. #2
    Registered User Annihilator817's Avatar
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    For the front:


    This is a bit more involved, but not hard at all. Disassemble the OEM MacPherson Struts. Again, there are thousands of write-ups on how to do this, so I’m not going into detail. The spring is not under much pressure.


    Next, you need to find the center of the bottom of the strut, and drill a small hole to release the gas pressure for safety reasons.



    Then, you must cut the top of the strut around the housing so that you can remove the old dampers. You can use anything for this, a pipe cutter, a sawzall, hack saw, cutoff wheel, etc. You don’t need to go all the way through the strut and the shaft, just through the housing.




    The OEM damper comes right out.




    Clean up the rough cuts or sharp edges left over from the cut.



    Next, drill out the whole at the bottom of the strut to spec.




    Carefully insert the new damper into the OEM strut housing, and carefully pound it into the housing.





    Once it is down far enough for the bolt on the bottom to catch the threads, draw the damper in the rest of the way by tightening that.





    And you’re done. Reassemble the Struts and put them back into the car.



    We went slow on the first strut because we were double checking our work, but I think the second strut took all of 15 minutes to build. This really is an easy mod, and the end result is a product that wipes the floor with those hack coilovers.


    Big thanks to wrxracer519 and to Big-E for all the help with the car!
    Good judgement comes from experience, and experience comes from bad judgement.

  4. #3
    Admiral Ackbar the 1st mycologist's Avatar
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    Nice write up. I don't know why people are scared of this process - it really doesn't even have to be a nice cut. Just get the hole centered.

    Nice you guys don't have to do the rears though.
    Last edited by mycologist; 12-05-2013 at 06:41 AM.
    "From a little spark may burst a mighty flame." - Dante
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    What were the part numbers for the Koni pieces? Were these the adjustable units?

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    Registered User Annihilator817's Avatar
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    8610-1453SPORT

    8010-1055SPORT
    Good judgement comes from experience, and experience comes from bad judgement.

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    Registered User wrx650's Avatar
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    Great writeup. I am going to pair these struts with RCE blacks or Swift springs at some point (hopefully soon). Everything still going okay with them?
    -Noah

    2009 Spark Silver Metallic Sedan - Stage 2+

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    Help Me with My Build Thread : http://www.clubwrx.net/forums/builds...wrx-sedan.html

  8. #7
    Registered User wreckingball man's Avatar
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    Thanks for the effort! Very clear instructions and good pictures, I'm sure this will be very handy for people.

  9. #8
    Registered User LENSPEC's Avatar
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    I did this exact same process on my last car and it was super easy if you have the right tools and a second set of hands. This may be the route I chose for this new car as well. Great write up OP.

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