While I am still waiting for my KW coilover to arrive. I am planning to change to sway bar on my'07 to further reduce the body roll and increase steering responsiveness.

Has anyone tried STsuspension.com sway bar?
Any clearance fit issue with coilover?

Their front spec is 28.575 Diam , solid vs. Stock 26.5 Diam, hollow T= 4.5mm
Their back spec is 26.9875 Diam, solid vs. Stock 25.4 Diam, hollow T= 4.5mm

Somewhere I read that the sway bar stiffness scales with power of 4 in diameter.
The front will be stiffer by (28.575)^4/(26.5)^4 = 135%
The rear will be stiffer by (26.9875)^4/(25.4)^4 = 127%
So, the set will maintain balance pretty close to stock but with increased roll stiffness.
I don't know how the stiffness will scale relative to solid versus hollow construction but expect the solid bar will further add to the stiffness. I also don't know how the material (type of metal) will affect the stiffness.

Any experience and feedback on STsuspension sway bar is appreciated.

Thanks.

 

http://www.maxrev.net/index.php?location=stsways.htm

 

 

Anyone know if thicker sway bars will make significant difference on the s2000??

 

Stiffer sways on the front are a good thing and do help increase understeer while helping the inside rear stay planted during agressive cornering (such as autox).

I've never seen much need in adding a rear bar. Drove a friend's with both front & rear bars...was not so good...he put the stock rear bar back in and the car handled much better.

 

cuonice has this setup(ST front and rear bars along with KW's) on his car and it handles amazingly.

 

I'm interested in getting more info on these too.