FE1= 18 mm (outside in a box)
FE3= 22 mm (I believe)
FE5= 24 mm (installed)
The rear trailing arm doesnít have a serviceable "sway bar" but there is a welded strengthening bar under the main beam, 20 mm is stock FE1. I remember because I measured it when I installed my progressive rear bar and got a total of 42 mm's of rear bar.
2006 LS coupe, manual, Victory Red
Sportlines, FE5 struts, shocks, front swaybar, Progressive 22mm rear swaybar, Airlift load assist rear airbags, TWM ST shifter, smoothed TB, LSJ exhaust, debadged, demudflapped, Yokohama AVID Touring P195/60R15's. Soon to come 17x7 Motegi Tracklight 1.0. Best to date 15.402 at 90mph
"No friend ever served me, and no enemy ever wronged me, whom I have not repaid in full."
Lucius Cornelius Sulla