Originally Posted by WYSIWYG

Anyone have any information on the new Hotchkis Sway Bars? Quality, fit, performance? What is the best setting? They are going on an '06 w/ sport susp. Thanks for the replies in advance.
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Sway bar sets include front and rear bars, greasable bushings, and brackets. Bars now come with welded retaining rings.

350Z & 03- 05 G35 Front
Hole 1 = 1525 lbs/in (22% Stiffer than stock)
Hole 2 = 1845 lbs/in (48% Stiffer than stock)
Hole 3 = 2270 lbs/in (82% Stiffer than stock)
Hole 4 = 2855 lbs/in (129% Stiffer than stock)

06 G35 Front
Hole 1 = 1525 lbs/in (5% Softer than stock)
Hole 2 = 1845 lbs/in (15% Stiffer than stock)
Hole 3 = 2270 lbs/in (42% Stiffer than stock)
Hole 4 = 2855 lbs/in (78% Stiffer than stock)

Rear:
Hole 1 = 520 lbs/in (80% Stiffer than stock)
Hole 2 = 655 lbs/in (125% Stiffer than stock)
Hole 3 = 840 lbs/in (185% Stiffer than stock)
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Originally Posted by Gsedan35

All G35 and 350Z oem sway bar specs follow a more complicated path then Hotchkis's limited sampling, thus they aren't telling the whole story.

I can specifically fill in the gaps.

Group A

03-04 350Z all trim levels (car's without the revised suspension ONLY)
03-06 G35 coupe (all USDM production with oem 17 and 18" wheels)
03-04 G35 sedan (sport and non sport suspension's
All group A car's have the following oem sway bar specs
34mm front 21mm rear
hollow wall construction 5mm in thickness (courtesy of tomsn16)
Torsional rigidity Front: 1130lbs Rear:385 (courtesy BJ EVO350)

Group B

04.5-06 350Z all trim levels (car's with the revised suspension)
05-06 G35 coupe (all USDM production with oem 19" wheels)
05-06 G35 sedan (sport and non sport suspensions)

34mm front 21mm rear
hollow wall construction 7mm front (courtesty tomsn16) 5mm rear
net change in front bar strength from 2mm increase in wall thickness
+17% (courtesty of tomsn16)