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Old 05-12-2014, 09:11 PM   #1
BeBop86
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Default Q: Are SPT and 06 WRX Aluminum lower control arms the same? (A: Yep!)

I'm wanting to price out a set of 2006 WRX (NON caster adding) front lower control arms, but am having trouble finding a part number.

Are the SPT aluminum front control arms the same as 06 WRX?

Again, I cannot use anything other that WRX aluminum front control arms. No STI parts.

Thanks!
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Old 05-12-2014, 09:15 PM   #2
BeBop86
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Or does anyone have the part number for aluminum front control arms for 2006 WRX or WRX-TR
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Old 05-12-2014, 09:28 PM   #3
Big-E
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Traverse Link RH Assembly: 20202FE820

Traverse Link LH Assembly: 20202FE671

You would have to inquire with a dealer as to whether the SPT kit is effectively the same as the late-2005 through 2006 aluminum WRX pieces listed above.

Verify above part numbers with a dealer.
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Old 05-14-2014, 06:43 PM   #4
BeBop86
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Default

To answer my own question, Subaru only made two versions of the GD chassis Aluminum control arm.
  • V7 V8 V9 JDM WRX/STI (Non Spec-C) / MY06 WRX / MY07 USDM STI [Non-Caster Adding]
  • V8 V9 Spec-C STI / MY04 MY05 MY06 USDM STI [Caster Adding]
The V7 Spec-C still uses the non-caster adding arm, but with offset bushings/mounts as seen at the bottom of this post.

Easy differences can been seen below:

Quote:
Originally Posted by Patrick Olsen View Post
To put what psyber_0ptix said into pictures:




I wasn't aware of the swaybar endlink tab difference that BigSky pointed out, I have always looked at the "kink" in the leading edge of the control arm. Makes it easy to see how/why the arms provide extra positive caster.

Looks like my red text is hard to read against the blue tarp. It says "Compare where the red lines go on the two versions, both are drawn to pass through the two nubs sticking up by the bushing."

Pat Olsen
Quote:
Originally Posted by Bikelok View Post
Here's a couple of ways to tell if they are caster adding arms.

Square end




Bend in arm

The non-caster adding arms have a pointed end and the leading edge is straight, not bent.
Quote:
Originally Posted by Slowsoul View Post
So, what you are saying is that a GG would run into a similar problem that I am having...I imagine that washers will work in my case as well...



Not for sale yet.

These arms came off of an S202, which might not mean much, but it DOES mean that they were on a Bugeye (GD) chassis...now, wether or not they are actually S202 control arms has yet to be determined, but they are not like any impreza control arm that I have seen yet...but then I haven't seen that many Impreza control arms either.

Take a look at these pics and tell me what you think?

The main part of the control arms is identical to other aluminum control arms. The difference that I see is the rear bushing, and the front bushing. The rear bushing looks much larger and about an inch longer than normal, and the front bushing looks like it is offset by about as much.



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Old 03-12-2019, 11:25 AM   #5
pazzoduc
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I know this is an old thread, but posting for anyone looking for this info, like I was.

V7 V8 V9 JDM WRX/STI (Non Spec-C) / MY06 WRX / MY07 USDM STI [Non-Caster Adding]
V8 V9 Spec-C STI / MY04 MY05 MY06 USDM STI [Caster Adding]

The 2007 V9 JDM STI (Non Spec C) came with the caster adding LCA's but apparently the USDM version did not.
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