Cadillac CTS-V 2004-2007 (Gen I) The Caddy with an Attitude...

D2 Coilovers

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Old 12-09-2012, 03:03 PM
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Originally Posted by NIKDSC5
From what i understand they come with 550/550 springs which yes, the consensus is they are too soft. So i plan on running some 700's up front and running the 550's the kit comes with from the front on the back initially. Like stated earlier in the thread i plan on running them this way, and as a true coilover setup.

This is a great price guys! Need 10 people to commit to get it, so first come first serve!

I know im pumped. Always love scoring a deal, especially on brand new parts.
I would highly recommend against running 550# in the rear as a true coil over setup. when you move the spring out board that far you are greatly affecting the effective wheel rate. this is why LG motorsports coilovers run 400# in the rear springs. 400# in true coilover setup is roughly the same as a 750# rear spring when traditionally mounted. the 550# would be MUCH stiffer.
Old 12-10-2012, 09:26 AM
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Originally Posted by FuzzyLog1c
If you PM me the price, I might be interested.

Edit: You guys do realize that the D2/K-sport coilovers are both manufactured by Standard Suspension, right? If you're looking for a great deal, it might be worth calling these guys directly.

http://standardsuspension.com/products.php
This is incorrect. I called standard suspension today and they said the are not affiliated with either K-sport or D2. Also their kit for the V (R1) is going for around 1500$
Old 12-10-2012, 09:37 AM
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Originally Posted by NIKDSC5
This is incorrect. I called standard suspension today and they said the are not affiliated with either K-sport or D2. Also their kit for the V (R1) is going for around 1500$
Weird. See below:

http://www.cadillacforums.com/forums...ml#post2191708
Old 12-10-2012, 01:48 PM
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So if std makes the d2/ksport stuff whats with the price difference? Are we all looking at the same models?
Old 12-10-2012, 02:05 PM
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Originally Posted by catch2otwo
So if std makes the d2/ksport stuff whats with the price difference? Are we all looking at the same models?
Unknown. STD/K-Sport/D2 have several tiers of shocks. I think the one that these guys are looking at is the economy "sport" model that was primarily made for the standard CTS.
Old 12-10-2012, 04:32 PM
  #126  
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Originally Posted by FuzzyLog1c
Unknown. STD/K-Sport/D2 have several tiers of shocks. I think the one that these guys are looking at is the economy "sport" model that was primarily made for the standard CTS.
Ya, It is difficult to compare accurately the "base" models of each one. They all seem to have the same basic abilities though, compression and rebound adjustability (how much is unknown), ride height, pre load etc...

Is there anything comparable to the kw setup? It seems like the only options are the d2/ksport then the kw v3 and then custom from penske, lg etc. I wish there was something like the pss9 or pss10s from bilstein. Have had good luck with those.
Old 12-10-2012, 04:35 PM
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Originally Posted by catch2otwo
Ya, It is difficult to compare accurately the "base" models of each one. They all seem to have the same basic abilities though, compression and rebound adjustability (how much is unknown), ride height, pre load etc...

Is there anything comparable to the kw setup? It seems like the only options are the d2/ksport then the kw v3 and then custom from penske, lg etc. I wish there was something like the pss9 or pss10s from bilstein. Have had good luck with those.
My dual-rate setup with a set of QA1's might give a set of KW3s a run for its money. As best I can tell, TC1578B and TC3025P are the correct part numbers for the front and rear shocks, respectively. $240 for each front shock and $210 for each rear shock. Apparently, QA1s are perfectly compatible with the Ground Control kit.

Therefore, you're looking at:
  • $500 for the Ground Control kit with your selection of primary springs
  • $400 for your selection of Eibach tender springs
  • $150 for Steele spring rubbers and Eibach isolators
  • $75 for adjustable end links
  • $900 for QA1 shocks
Bottom Line: $2025

Minus whatever you can get for your old stuff (if anything). The real market for this solution are guys that already have the Ground Control kit, because then the investment is a lot less. If we had 10+ people with Ground Control kits that wanted to be free of the FG2 tyranny, I'd put together a group buy. But I wouldn't expect the shocks to come down more than $200 per set (~$700 EST).

Last edited by FuzzyLog1c; 12-10-2012 at 04:51 PM.
Old 12-10-2012, 11:36 PM
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fuz, ill take this to pm's as to not clutter this thread.
Old 12-12-2012, 09:36 AM
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So what is the overall ride quality, and performance of the D2 compared to the stock suspension, and compared to using HR or Eibach springs??
Old 12-12-2012, 10:53 AM
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Originally Posted by Hostile03SVT
So what is the overall ride quality, and performance of the D2 compared to the stock suspension, and compared to using HR or Eibach springs??
Compared to OEM it is firmer but not overly harsh. I drove it 200 miles across northern california and was perfectly comfortable. again the dampers are 32 way adjustable so you can in fact change how harsh or plush the car rides (I'm 9 click softer from the harshest setting. it is consider the lowest race damper setting according to D2). If you are not planning an aggressive drop and don't intend to track the car, the springs included in the kit are more than sufficient. however with a decent drop and at my hp levels i had major tire rub issues at WOT and had to raise the rear end.
Old 12-12-2012, 12:38 PM
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Anybody doing stiffer springs like mentioned earlier? I'm thinking up upgrading my springs to these: http://www.ebay.com/itm/310485462722...84.m1423.l2649


Originally Posted by johnking3194
The K-sports will also not work with aftermarket rear sway bars.
Also This is an old post, but wanted to chime in that this is complete nonsense, I have K-Sports and Hotchkis sways, zero issues with installation.

Last edited by etcts-v; 12-12-2012 at 12:45 PM.
Old 12-12-2012, 01:16 PM
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Originally Posted by furbe
I put around 20,000 miles on my 05 V with D2 coilovers and they were great. Only thing I found was the spring rates were weak for track duty. I just replaced with an aftermarket coilover spring, Got um off fleabay for around $950 iirc.

Nowhere near the quality of KW but at less than half the price, get what you pay for.
Sorry, your quote is a little confusing. You got the D3 coilover kit for $950 or replacement springs for $950 ?
Old 12-12-2012, 02:57 PM
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The entire coiloiver kit around $950
Old 12-12-2012, 05:22 PM
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FYI--big developments may be coming from QA1 in the next few weeks.

I'm presently discussing a dual adjustable coilover solution with QA1 engineering that may obviate the need for the Ground Control kit and be equal to (and possibly better than) KW Variant 3's in terms of quality. This includes having true coilovers for the rear. They're sending me dimensions based on their CAD drawings tomorrow morning for evaluation.

Cost per dual adjustable pair with 450, 550, or 650 in-lb 2.50" springs will be about $700 if purchased by yourself (or $310 per shock without springs--letting you recycle your standard 2.50" springs). If there's enough interest, I will aggressively coordinate another group buy (and probably go 4 for 4 for the events I've organized thus far).

Last edited by FuzzyLog1c; 12-12-2012 at 05:40 PM.
Old 12-13-2012, 10:04 AM
  #135  
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Originally Posted by fuzzylog1c
fyi--big developments may be coming from qa1 in the next few weeks.

I'm presently discussing a dual adjustable coilover solution with qa1 engineering that may obviate the need for the ground control kit and be equal to (and possibly better than) kw variant 3's in terms of quality. This includes having true coilovers for the rear. They're sending me dimensions based on their cad drawings tomorrow morning for evaluation.

Cost per dual adjustable pair with 450, 550, or 650 in-lb 2.50" springs will be about $700 if purchased by yourself (or $310 per shock without springs--letting you recycle your standard 2.50" springs). If there's enough interest, i will aggressively coordinate another group buy (and probably go 4 for 4 for the events i've organized thus far).
this!!!!
Old 12-13-2012, 11:29 AM
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Does anyone have any pictures of these coil-overs on their car? I am not looking for a generic picture either.
Old 12-13-2012, 11:49 AM
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Originally Posted by 9t8z28
Does anyone have any pictures of these coil-overs on their car? I am not looking for a generic picture either.
check pages 1-3 of the thread.......come on now
Old 12-13-2012, 01:07 PM
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Originally Posted by Dmax/04V
check pages 1-3 of the thread.......come on now
RELAX.... not everyone has all the time in the world to view every page.
Old 02-28-2013, 06:58 PM
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Any updated reviews from people running these for a few solid months?
Old 03-01-2013, 01:38 PM
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Originally Posted by FuzzyLog1c
FYI--big developments may be coming from QA1 in the next few weeks.

I'm presently discussing a dual adjustable coilover solution with QA1 engineering that may obviate the need for the Ground Control kit and be equal to (and possibly better than) KW Variant 3's in terms of quality. This includes having true coilovers for the rear. They're sending me dimensions based on their CAD drawings tomorrow morning for evaluation.

Cost per dual adjustable pair with 450, 550, or 650 in-lb 2.50" springs will be about $700 if purchased by yourself (or $310 per shock without springs--letting you recycle your standard 2.50" springs). If there's enough interest, I will aggressively coordinate another group buy (and probably go 4 for 4 for the events I've organized thus far).
sounds good !


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