I have a track pack which I believe has the same size sway bar as a regular GT 24mm.

The boss has 25mm and the Laguna seca is 26mm

Ford racing sway bar is listed as 22mm, why?

Which is the better sway bar the boss or Laguna seca?

Are these just as good as the eibach rear sway bar?

 

Actually, I think there's four different rear sway bars in the various FRPP S197 kits (M-5490-)
A - 22mm
B - 24mm
C - 20.64mm
D - 22mm Convertible

The 2005 - 2010 GT's used a 20mm bar, so the FRPP "GT" kit was larger than those.

 

Hard to say how much of a difference you would actually notice, but if you want the biggest The RTR and Whiteline Rear sway bars are both 27mm.

 

I just checked AM, and LMR, and the Ford Performance rear sway bar is listed as 22mm. The Boss rear sway bar is listed at 25mm.

 

What are you trying to accomplish?

 

Just a reminder that the thickness of the bar is not the only factor. Usually there are three holes on each side and the stiffness of the bar depends also a lot on which holes you use (close or far from the bar). If weight is a factor you can use a lighter and less tick bar but using close holes so you can achieve the same stiffness than ticker bar but using the far holes.


As Jazzman442 sais it dépends on what you are trying to accomplish and also what are your other rear suspension specs (adjustable panhard bar, springs, coilovers, shocks, etc.)

 

I love a bigger one, just a little extra rear end wiggle