After driving my friend's RX8 with JIC coils, i gotta get a set of coils myself

now, i've came down to these

TEIN Basic

TEIN Flex

HKS Hipermax RS

can someone post the specs of all suspensiona again? i couldnt find it on search

 

Look for Gsedan35 and click on the option to see all the posts he has done. He is one of the resident experts on suspensions, you will get more than you could ever need.

 

Ok, here ya go. Plus some other's for good measure.

Tein Flex (twin tube construction, adjustable dampners
Full-length adjustment and height adjustment for separate setting of the height and spring preload
Spring rates 672/672
Stiffer then oem by F+114% R+98
Transfers +16% roll stiffness to front
Side Note: Extremely high spring rates mean even when the adjustable damping is set as low as possible, you may not find ride quality happiness, several reports of this setups harshness exist Yet a few owner comment’s of a “like stock ride quality” also exist. However given the fact that they use a spring stiffness that’s over 100% stiffer then oem, if ride quality is of concern, either hitch a ride in a car equipped with them or make a different choice. In addition, several review’s have been done by people actually having the original more softly sprung Tein Flex coilovers do not take their comments to mean the same as the one using the current product, the original product specs are listed below under Tein Flex JDM.

Tein Flex JDM specs (can be special ordered est 6-8 weeks delivery)
Full-length adjustment and height adjustment for separate setting of the height and spring preload
Spring rates 560/560
Stiffer then oem by F+78% R+64%
Transfers 14% roll stiffness to front
Side Note: This is the original specs first offered in the U.S. with the Flex, shortly after it’s introduction the specs changed to those listed further above (672/672)


Tein Basic (twin tube construction, non adjustable dampners )
Spring rates 504/504
Stiffer then oem by F+61% R+43%
Transfers +18% roll stiffness to front
Side Note: Excellent value at it’s price point. Also keep in mind that for sedan owner's, low minimum -1.6" front drop mean's your looking at needing to purchase front camber correction to sway within specs. Chances are you'll follow suit with a rear drop that will also require aftermarket correction as well.

Tein SS (twin tube construction, adjustable dampners )
(JDM only at this time. 6-8 weeks delivery, come via ship)
Spring rates 392/314-392 (rear’s are progressive)
Stiffer then oem by F+25% R+15% at peak

Tein CS (Monotube constructionad, adjustable dampners )
Special Note: A comfort ride system compare to HKS LS.They are valved and sprung to fullfill their intended mission of offering up improved ride comfort. More specifically their valving will impact the performance they can deliver. And to add, revalving them is extreamly expensive if you find they are too soft for you. If you want performance, pick a different Tein offering or pick a different brand.
Spring rates 392/392
Stiffer then oem by F+25% R15%
Transfers +10% roll stiffness to front


Bilstein PSS coil over (Monotube construction, non adjustable dampners)
Special Note: Mild spring rates, but Bilstein says the dampners are performance valved
Spring rates 370/240-420 (rear progressive)
Stiffer then oem by F +18% R +23% (at peak rear spring rate)
Transfers +5% roll stiffness to rear
Sidenotes: IMO, I would ditch the rear springs that come with the kit and swap in Eibach ESS springs 425lbs in rate

Bilstein PSS9 coilover (Monotube construction, adjustable dampners)
Special Note: Mild spring rates, but Bilstein says the dampners are performance valved
Spring rates 370/240-420 (rear progressive)
Stiffer then oem by F +18% R +23% (at peak rear spring rate)
Transfers +5% roll stiffness to rear
Sidenotes: IMO, I would ditch the rear springs that come with the kit and swap in Eibach ESS springs 425lbs in rate. Until officially released the adjustable Pss9's, these are still in R&D.

HKS LS+ G35 Coupe (Monotube construction, adjustable dampners)
Spring rates 504/448
Stiffer then oem by F+58% R+29% (rear springs are progressive)
transfers 29% roll stiffness to the front
Side Note: Has the unusual distiction of actually being valved stiffer then the same coilover made for the 350Z, though the Z version does NOT transfer as much roll stiffness to the front


HKS LS G35 (Monotube construction, non adjustable dampners)
Spring rates 448/336
Stiffer then oem by F+43% R -1%
transfers 44% roll stiffness to the front
Special Note: A comfort ride system, compare to Tein CS coilover

HKS LS 350z (Monotube construction, non adjustable dampners)
Spring rates 448/448
Stiffer then oem by F +43% R +31%
transfers 12% roll stiffness to the front
Special Note: A comfort ride system, spring rates make better sense then same G35 application, compare to Tein CS

 

TEIN Basic
Spring rates at 9

TEIN Flex
Spring rates at 12

HKS Hipermax RS
Spring rates at 8

 

Check out Silk Roak.
www.silkroad-usa.com
http://www.silkroad-usa.com/pages/rm8_app.htm

MunkyWurks Garage retails them at MSRP.
http://www.munkywurks.com/
you can reach them at 808-848-8794
Ask for Sean or Clint and they can give you more information about the Silk Road Coil Overs. Sean has an AE86 (Hachi Roku, Corolla GTS) with Silk Road installed.

 

No specs on the web site that I could find.

 

Gsedan35, another one to add to your list. I e-mailed Moton and they will be offering a G35C/350Z Club Sport set in approximately 3 to 4 months. Don't have any specs yet but will have rebound, damping, ride height, and damper length adjustments.

 

Extremely high-quality, high performance coilover systems for the most popular Japanese sport compact applications. High pressure, gas-charging, mono tube type shock absorber. Extra-thick piston rod design, coupled with innovative valving, allows a perfect balance between capable high-speed damping and low frequency smoothness. Also minimizes aeration and cavitation, even under extreme conditions.

* 8 step dampening adjustment allows fine-tuning of overall suspension dynamics.
* Inverted strut system substantially enhances rigidity and heat dissipation.
* Includes high-quality pillow ball mounts.

* Adjustable, locking spring perch PLUS adjustable threaded shock body.

* Individual spring rates available for purchase separately. meaning you can spec your spring rate

* Integrated, rubber dust boots maintain performance and enhance durabilty





UPDATE!

RM/A8 applications now include nitriding on the piston rod, the cylinder and the outer tube.

Merits of nitriding

· Increased surface hardness

· Increased abrasion resistance

· Superior corrosion resistance

· Improved heat resistance (warping)

· Improved fatigue life of the metal

· Offers more benefits over processes such as cementation or induction hardening.
http://www.silkroad-usa.com/pages/rm8.htm

 

HKS Hipermax RS are adjustable right?

 

yes

 

I think HKS RS are pretty good... I'm happy with my set-up...