MeanTA

Its a pretty good weight savings. But to be honest unless you are looking to shave every ounce off the car. Solid swaybars are just fine. Pretty sure your car can overcome the extra 12 pounds

CALL911

It seems that the 1LE sway bars are hollow and 32mm and the rears are unconfirmed at 19mm (I saw unconfirmed because that is the same size as stock and that doesn't make sense to me).

MeanTA

The 1LE is 19mm. GM wasnt to smart on some parts of our cars. lol

pkincy

Actually I believe the 1LE bar was actually 21 mm for about 6 months and than changed to 19 mm.

A solid bar of the same diameter as a hollow bar is stiffer. So roughly a 32 mm solid bar is about as stiff as a 35 mm hollow. A 19 mm solid is about as stiff as a 21 mm hollow.

I don't know anyone that needs the ST 35 mm solid ever. Tried it, didn't like it. A good inexpensive combo from the old days was Addco. They were solid and measured in inches. 1.25 in up front and 7/8ths in the rear. A very good combo with Eibach springs and good shocks.

Another good combo that I liked with Eibachs/Konis or Bilsteins was the 32 mm hollow front GM bar and the 21 mm hollow (or the 19 mm solid) rear bar. Again very good balance. I tried the STs 35 mm solid and 24 mm rear bar for a couple of months and they were just too stiff even with my Eibach/Koni DA set up.

Enjoy,

Droppingshellz

Hello, I have a 1999 Z28 with Koni springs and shocks. Lowered 2 inches. What size sway bars would work best with this set up?

CALL911

Best for what? There are different sizes/combos for a reason. Many people have different applications/different desires on how they want the car to handle.

If you are looking for the best for high speed cornering like I am, then the combo I previously listed will be the best.

Droppingshellz

I pretty much have every aftermarket suspension piece on the car as possible except sway bars. I'm looking for something good to eliminate more of the "body roll". Thank you.

CALL911

Depending on "what other" suspension parts you have, you may or not may have the best for what you want. Lowering is good along with the sway bars. You would also want stiff shocks and springs. Subframe connectors and strut tower braces would also help.

Droppingshellz

I have adjustable Koni Struts and shocks, Koni springs, BMR pan hard rod, trailing arms, subrames, and strut tower brace. BMR K Member and lower control arms too. Factory sway bars.....

CALL911

You have some decent parts. Upper A arms would also help. Koni's are "okay". Bilsteins would be better with Eibach springs. Tires make a big difference as well. Sway bars with being lowered will make a very substantial gain in cornering though.

Droppingshellz

tire sizes are 275 40zr18 in the front and 315 30zr18 in the rear.

CALL911

It's more than just the tire size. What compound, what brand will make a difference.

Something like this would be ideal> Nitto Tire NT01 Overview