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Exterior Discussion / Modifications Want to change the look and appearance of your Dodge Challenger? This section is for the discussion of any exterior visual modifications. Examples include wheels, custom paint, grills, etc.

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Old 11-16-2012, 12:54 PM
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Eibach Pro Springs

I have a 2012 R/T Classic and just installed the Eibach Prokit springs (took all day, what a bear). I also installed the Petty Garage Strut Tower brace (color matched to car) and Shock tower brace (will be cutting carpet this weekend to get it to fit back in the trunk.

What I wasn't planning on was the camber change. The fronts went to -1.7 degrees (way outside the -.09 to +.4 range). I just ordered from Summit the SPC upper control arms that have caster/camber adjustability.

For the rears, the camber really changed and ended up -2.0 degrees well beyond the -1.2 to -.01 range. Fortunately Eibach does make the rear control arm bushing and Summit had them as well.

Long story short, I should have spent more time researching this as I could have changed out all the parts at one time. Will post pictures once I'm done.
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Old 11-16-2012, 01:28 PM
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Any p/n's for additional parts ordered would be greatly appreciated.


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Old 11-16-2012, 02:05 PM
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How to lower your r/t or se mopar stage one

Mopar stage 1's

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Old 11-16-2012, 10:19 PM
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The Eibach ProSet Springs, Part Number: 28111.140 (TireRack has them for $255). Eibach Rear Alignment kit
Part Number: 5.66085K ($85)and SPC Performance Front Upper Control Arms SPS-66045 ($340) I got both from Summit Racing. I looked all over the web and SPC seems to be the only one currently making the control arms for the 2012's.

Total drop of the car was 1" at the fronts and 1.25" at the rear. I expect the springs to settle over the next 30 days finally reaching another .25" at both ends. The combination of the springs and strut/shock braces has made a major change to how the car handles on turns, but has also firmed up the ride. One definately feels the bumps more.
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Old 11-17-2012, 07:13 AM
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Thanks for all the p/n info. Looking forward to hearing your feedback on the install of the adjustable camber parts.


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Old 11-19-2012, 08:16 AM
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With the wheel gap that the LX platform comes with we recommend ST Suspensions Coilovers. By using coilovers you will achieve the ride quality that springs do not offer as well as an adjustable lowering height.

Unfortunately due to the design of the 2011+ the alignment bushings are sometimes required to get back within factory specs. This applies to most lowering springs as well.
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Old 11-20-2012, 04:12 AM
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i have a 2012 rt, and I DID the eibach pro kit. just springs.

bad experience with me, once installed at the shop...they took it to get it aligned.

come to find out when i got new wheels and rims..they didnt aligned it.

had to install spc adjustable control arms in the front, and rear camber kit. i spent alot just to get aligned. sucked. around 900+

before

after

Last edited by 2012WhiteChallengerRT; 11-20-2012 at 04:14 AM.
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Old 11-20-2012, 02:07 PM
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Originally Posted by SuspensionSource View Post
With the wheel gap that the LX platform comes with we recommend ST Suspensions Coilovers. By using coilovers you will achieve the ride quality that springs do not offer as well as an adjustable lowering height.

Unfortunately due to the design of the 2011+ the alignment bushings are sometimes required to get back within factory specs. This applies to most lowering springs as well.
What coilovers do you recommend for a 2012 RT? Also, if I just want to drop the rear to match the height in the front, would you recommend springs? If so, which ones? The rear is around 1.5 inches 1-1.5" too high. Will this affect ride quality?


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Old 11-20-2012, 04:33 PM
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I lowered mine with the SRT-8 Mopar suspension kit: #P5155435. It's about 1 inch lower and the ride is stiffer but not bone-jarring, and alignment is not as critical, but still recommended.

You can find a new kit on any car site (I got mine on E-bay) for around $470 plus S&H.
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Old 12-04-2012, 05:15 PM
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Originally Posted by 2012WhiteChallengerRT View Post
i have a 2012 rt, and I DID the eibach pro kit. just springs.

bad experience with me, once installed at the shop...they took it to get it aligned.

come to find out when i got new wheels and rims..they didnt aligned it.

had to install spc adjustable control arms in the front, and rear camber kit. i spent alot just to get aligned. sucked. around 900+

before

after
Worth every penny! Looks bad a**!!!
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