I've done alot or research on this (all over the net) and I'm finding two different diameters for the Eibach front sway bar. Does Eibach actually make 2 different diameter front bars for the cobalt? The rear bar is 25mm, so that's not what I'm seeing.

The Eibach part number is 3899.310. Some say it's 27mm (see below)

http://www.autoanything.com/suspensi...8A3368110.aspx

Some say it 29mm (see below)

http://www.turbotechracing.com/produ...dcategory=5627

It's more than just these 2 companies. I've seen 4 or 5 claims each for the 27mm and 29mm bars.

Vendors.......?

Does anyone actually have one of these installed on their car here?

 

Get OTTP or TTR bars

 

1. That dosen't answer the question.

2. OTT and TTR don't make FRONT SWAY BARS, at least not that they have on their sites.

I bought a TTR Rear bar already, cause the Eibach bars are on backorder

 

FYI......The answer to this question in no. I just got mine in the mail from Eibach and its 29mm just like their catalog says. I installed the 25 mm rear sway bar last night and have ALOT of oversteer with just the rear bar. The front bar is being professionally installed now as I type. Eibach says you have to drop the subfame to install the bar because of its size and I don't want to have to deal with that myself.

If anyone is interested I'll keep you posted on how the setup handles?