Here is the information regarding Koni's K Sport Coilovers:

Ksport Kontrol Pro Fully Adjustable Coilover Kits provide the ultimate in suspension technology featuring its 36-way adjustable dampening, adjustable spring perch, adjustable body and pillow-ball mounts. The Ksport Kontrol Pro Coilover kit has been designed with professional road racing in mind offering extremely high value and performance.

Key Features:

* Default spring rate F: 15kg R: 13kg
* 36-way adjustable dampening
* Made from high quality 6061 Aluminum with T6 for increased hardness
* Compression/Rebound adjustable
* Adjustable spring perch for height adjustment
* Adjustable body allowing maximum suspension travel
* Pillow Ball Top Mount w/ adjustable camber
* Monotube High Pressure Design reduces oil leakage
* Electroplated body for protection from corrosion and rust
* One Year Limited Warranty

Would this be a good fit for a G35 sedan? Not too soft or too stiff? I am deciding between these and the Tein Basics.

I think you need to revise your title. The Ksport coilovers are in no way made by Koni or affiliated with Koni in any way.

Really? I found out about them through eBay, and they were called the Koni Ksports...

ksport is deffinatly not a koni product. k sport is made in the same place as d2's are made, or so i heard from 240sx forums. i've heard good and bad things about them some love them some hate them.

Gotcha. I've ridden in Maxima's with the D2 coilovers and they had excellent ride quality and adjustability.

* Default spring rate F: 15kg R: 13kg

holly crap. might be good if you're constipated...

With the Ksports, you have your choice of various spring rates- these are their standard though (for the 350z).

Which spring rate would you suggest for a firm ride, but not jarring ride?

Here's two threads from my350z.

http://www.my350z.com/forum/showthre...ghlight=ksport

http://www.my350z.com/forum/showthread.php?t=135052

Thank you dklau, for the links.

Looks like it will be the Tein Basics for me afterall.

maybe 8-9kgf/mm

Yeah, that's why I'm eyeing the HKS RS coilovers. Supposedly a good compromise between track and street duty with reasonable 8kg/8kg spring rates. But for ~$1,800 I would expect those coilovers would be able to adjust spring preload and ride height seperate of each other.