GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Is it just me or do these cars have a crap ton of chassis flex?

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Old 07-07-13, 09:03 PM
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xspsi6
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Default Is it just me or do these cars have a crap ton of chassis flex?

I put the rear brace kit on the rear sub frame and it helped loads now I seem to notice the front has a lot of flex as well so I am hunting down an oem aristo strut bar to see if this will help some but no matter how I dial in the coil overs I seem to notice the front shock towers flexing over speed bumps etc etc.

I have 18x8.5 staggered wheels with 19x10 in the rear, k sport coil overs, TRD sway bars, poly bushings in the front end including caster arms so maybe these mods make it more defined but I feel like she needs some serious bracing so what are the impressions of other 2gs owners on this subject??
Old 07-07-13, 09:13 PM
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Revive
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It's not just your imagination. These cars have a lot of flex! Lol
Old 07-07-13, 09:34 PM
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tmf2004
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Originally Posted by xspsi6
I put the rear brace kit on the rear sub frame and it helped loads now I seem to notice the front has a lot of flex as well so I am hunting down an oem aristo strut bar to see if this will help some but no matter how I dial in the coil overs I seem to notice the front shock towers flexing over speed bumps etc etc.

I have 18x8.5 staggered wheels with 19x10 in the rear, k sport coil overs, TRD sway bars, poly bushings in the front end including caster arms so maybe these mods make it more defined but I feel like she needs some serious bracing so what are the impressions of other 2gs owners on this subject??
Seems like you have the flexing under control with the sways and poly bushings... Look into some Ultra Racing bars.. I know they sell many different bars for the GS.. You probably need actual bars on the sub frame...



borrowed this pic from another member but u get the idea.. You probably need UR-RL4-930

Last edited by tmf2004; 07-07-13 at 09:38 PM.
Old 07-07-13, 09:54 PM
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xspsi6
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Ok that is exactly what I was needing!
I will order all of those asap but the front needs the most attention imo, Is ultra racing a quality brand? I ask because I have never heard of them before.

Here is a pic of the top speed pro1 brace kit I bought and installed and it helped a good bit as well
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Old 07-07-13, 09:55 PM
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xspsi6
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Are any of you guys running these brace kits currently?
Old 07-07-13, 10:01 PM
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I'm not currently but Ultra sells there bars on Ebay and you can contact them directly.. .
Old 07-08-13, 11:40 AM
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My wife's GS has something similar to that 4 point brace except on her car it's red in color, so I think it's a TOMS brace. It seemed to help with chassis flex when we tested with it on and off of the car.

Here's a link to the part:
http://l-tunedparts.com/product/?id=444
Old 07-08-13, 12:55 PM
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Revive
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There was talk about this somewhere around here before. Rear 4 point bar from UR is meant for an Aristo chassis and won't fit the usdm GS. I almost bought every one of those before I found out!
Old 07-08-13, 02:51 PM
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Originally Posted by Revive
There was talk about this somewhere around here before. Rear 4 point bar from UR is meant for an Aristo chassis and won't fit the usdm GS. I almost bought every one of those before I found out!
Talk where? Dont spread FALSE statements unless you have experience with these..

I have all the ultra bars on one of my cars, incluidng, Topspeed Carbin replica upfront. and Toms 6 link replica. My car is stiifer than an Old man on ********. No bs, but i corner in and out 50/50. I have other suspension components, but to keep it simple, the BARS FIT

Last edited by porn-adkt; 07-08-13 at 02:56 PM.
Old 07-08-13, 03:09 PM
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Revive
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https://www.clublexus.com/forums/6440775-post21.html

From this thread:
https://www.clublexus.com/forums/sus...-rear-bar.html

Not "spreading" anything just don't want to see people buying something that won't work. Can you post up a pic of it installed so everyone has a definitive yes? I'd be down if it actually fits
Old 07-08-13, 03:40 PM
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Originally Posted by Revive
https://www.clublexus.com/forums/6440775-post21.html

From this thread:
https://www.clublexus.com/forums/sus...-rear-bar.html

Not "spreading" anything just don't want to see people buying something that won't work. Can you post up a pic of it installed so everyone has a definitive yes? I'd be down if it actually fits
pork-adkt knows what hes talking about. he knows the 2gs bumper to bumper.
Old 07-08-13, 03:59 PM
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I dont have pics at the moment.. On a heads up the Topspeed 6 link replica will not fit if your gonna use the Ultra RL2- 932. its one or the other. and if you run anything bigger than stock exhaust or anything larger the 2.5 the 4 point RL4-930, may need spacers at the mounting point.
Old 07-08-13, 06:15 PM
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xspsi6
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So should the 930 and 932 be my next round of rear chassis upgrades? And will the aristo strut bar help the front as much as I am thinking it will?
Old 07-08-13, 09:37 PM
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Originally Posted by xspsi6
So should the 930 and 932 be my next round of rear chassis upgrades? And will the aristo strut bar help the front as much as I am thinking it will?
932 will not work on your car because you already have the 6 link or remove the link to the subframe and replace it with the 932

930, yes. it helps alot
Old 07-08-13, 09:40 PM
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