Been trying to figure out the diameter of the rear sway bar but all the answers I’m getting are mixed, I’ve heard 13mm, 14mm and 19mm. Does anyone know for sure? And does anyone know for the sport trim (I know it has a larger rear sway bar)
And does anyone have any feedback on the 19mm sway bar? Is it over kill and causes oversteer? Is it just the perfect amount? Or does it help but a larger one would be better? Same for anyone with the sport package / has a 14mm on theirs

Thank you!

 

Cars with Sport Pkg. have a 14mm sway bar.
IIRC the standard bar is 13mm.
19mm is aftermarket.

 

jjpls430, in the facebook group for ls430 , I have read good things about 19mm rsb. Years ago to this day on my older camry I have a whiteline RSB and it improved handling with no apparent issues.

Now, i am look for an aftermarket with a reasonable price. Let me know what you found...

 

13mm/14mm will give an OEM ride. The risk of going to too large of a sway bar is the cornering forces merely transfer to your end links, which aren't beefed up. I suspect your cornering would improve but articulation over bumps will suffer, as the bar will resist the rear wheels from articulating independently, which is the entire point of having independent suspension; without it, you may has well have a solid axle like on a truck!). Remember, it's all designed as a system. I upgraded from 13mm stock to 14mm (you need the 14mm sway bar bushings, obviously). Don't forget to change the end links and those rubber bushings (I seem to recall they are included as a single unit on the LS but all separate pieces on the LX) at the same time to yield the best improvement.

 

What end links would you suggest? do you think the ones listed in the link below would be sufficient? Also, my car has the sport package so it comes with the 14mm sway bar, I obviously wouldnt need to upgrade the end links if I just got poly bushings for my stock sway bar right?

https://a-premium.com/product/a-prem...RoCQecQAvD_BwE

 

Here is a related thread from 2011 dealing with larger rear sway bars:

https://www.clublexus.com/forums/ls-...-sway-bar.html