Understand that I'm saying that in the hear and now of this thread to the OP, toss in different circumstances and the Koni's could make all the sense in the world. Adam know's what he's talking about, if he say's Bilstein' make the most sense for him, I would agree with that.

 

yep the Koni's are terrific shocks - probably the best out there and the valving range kicks ***. But, they want to be mated to a stiffer spring, and that limits the spring you can use (since there aren't many springs that are significantly stiffer than stock front and rear). Given the OP's desire for something more comfortable than stock, I'll stick by my recommendation of the Bilstein as being the best I've used yet

 

Adam, do you happen to know if the Bilstein shocks have a second spring seat clip groove cut into the front shock bodies just like the Koni's do?

 

http://www.bilstein.com/ProductDescriptions.pdf
http://www.bilstein.com/mistore/ymm_...reYMM=storeYMM

When it comes to warranty bilstein honors cause they say for use with lowering springs. I have not had that kind of luck with koni. Z1 is right for saying bilstein, good warranty and probably great ride. I don't have direct z experience with bilstein but when every other vehicle you've driven with bilsteins has been good then the odds are... I included the link as to the hd or sport question. Good luck with the choice you make.

 

Hello guys. Is anybody familiar with d2 coilovers for my z? I really like the features for its price but, is it good performance??

 

quick off topic question guys , will 06 shocks fit on my 04 ?

 

Yes.

Are your 04 shocks worn or does you car not have the revised suspension?

 

Once spec your overlooking and in a big way, are the spring rates the D2 setup uses. Besides the spring rates, like most coilovers that spec well at a lower then average price they don't measure up compaired to other products from know brands that do deliver. Your far better off spending a little more and getting something else. Most cheap coilovers are oversprung and underdampned.

 

ya i do agree. I might just save up for the jic a2.

 

Run a search on jic narrowed to the suspension section, not a choice I would make.

 

no clue if my car has the revised suspension but I've been driving with my tanabe gf210 springs for about 30,000 miles and seems super bumpy

 

Doesn't help that the spring is not that much stiffer then oem on a 1.2" drop and that the oem bump stops are very unforgiving.

To see what shocks you have look at your rear shocks and compare them to the revised rear shocks in the following pictures. Look at the dustshields and see if your rear shocks have the same sticker with yellow in it. No stickers and a different dustsheild mean you don't have the revised suspension.

 

so what should I do if:

a) have the revised suspension

b) don't have the revised suspension

goal: is for a more comfertable ride than stock and elimnate most of the bounce.

 

Before we ignor the chance what whatever oem shock you have may simply be worn out. Have you alway's felt the way you do since the springs were installed or have things slowly gotten worse and worse?

a) Bilstein sport shocks. IMO, I would also not reinstall the oem dustshield/bumpstops. Again, IMO I would install Koni progressive soft bumpstops and run them instead.

b) used oem 05-07 shocks or Tokico HP (unless you have D-spec money) Same opinion as above on bumpstops

Here's Koni progressive soft bumpstop part number
Kon15.34.20.000.0

Here's a link to where you can buy them.
http://www.truechoicekoniracingservi...act/index.html
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How do you think the Koni's would match with these swift springs.

Swift 350Z Spec-R progressive springs 1.2”/1”
Spring rates in LBS initial/final Front: 291/392 Rear: 280/448

They do have rather soft initial rates, so do you think the tokicos would be a better match?

 

I really appreciate the help gsedan , after I installed the springs the bumpiness got pretty bad but doesn't seem to get worse. I think I will look into some used oem 05-07 shocks since I don't plan to keep the car for long.

 

ok question for you shock wiz's. Gonna get some tanabe gf210's. car has 26,000 miles 05'
1) is the ride real harsh on stock struts?
2) good struts for these springs + less expensive?

 

Having tested Koni's with linear Tokico D-spec springs which have a 1" drop and 375/375 rates, I would not run Koni's with springs that drop that low with initial spring rates that low. You would be better off with Tokico D-spec shocks if you must use the springs because of that shocks ability to adjust comression dampning and rebound, whereas the Koni's are rebound only adjustable.

 

Makes sense to me.

 

1. Some say they are like stock, really nice. Other's complain about ride quality issues. If you must have that amount of drop, IMO I would go with Eibach prokits myself, though I would never install progressive springs period.

2. Less expensive= shocks that aren't any different then oem other then being new (KYB GR2 or Tokico HP) Tokico D-spec would be way to go if don't want to stick with the oem shocks. Keep in mind that GF210s are not that much stiffer then oem springs in the front and actually softer in the rear then your oem springs, can't really build a big case that you need to kick the oem 05 shocks to the curb.