Originally posted by Beach-CL:
<STRONG>The description of the Comptech sways in Autocarparts.com says:

1 1/16 tubular front
7/8 solid rears

Are they really hollow?


Thanks.</STRONG>

Originally posted by EricL:
<STRONG>


Yes, the front bar is hollow. It has the same O.D. as the stock bar, but the wall thickness is greater (I hope I remember, since I did a bunch of calcs)...

Stock 0.107 wall thickness, 27.2mm OD
Comptech 0.177 wall thickness, 27.2mm OD

Increase in front bar rate approx 13-20% (calc city).


Rear Stock CLS bar -> 19MM OD (solid)
Rear Comptech CLS bar -> 22MM OD (solid)

Increase in rear bar rate approx 80%


Note, if the bars are solid, the calc to figure out how much more stiffness you are getting is easy:

(new_OD^4)/(old_OD^4) = change in stiffness I used (22^4) / (19^4) for the rear -- OK </STRONG>