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Old 04-26-2021, 10:18 AM #1
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ADDCO front sway bar for 5th Gen?? Phantom?

I've been researching a front sway bar option for the 5th gen for some time now. It looks like ADDCO is the only maker in existence that's even considered it (for years?) and already makes a rear, but has never gone through with production for the 5th gen? Has anyone ever seen one of these unicorns in the wild?
It only makes sense to me, and I'd think everyone else, that as tires and lifts get bigger past stock, and throw around more weight and torque, the additional supportive aspects of the suspension also need to improve and come back to baseline. Enter Eimkeith panhard correction angle kit, lower link and camber bolt reinforcement, urethane, etc...yet, no sway bar improvement option?
It almost sounded like the 4Runner beefed the SR5 sway bars as well to the new 2020 (31mm?), is the bolt spacing the same on the bracket making it a direct swappable upgrade?
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Old 04-26-2021, 10:22 AM #2
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interested to find out about the 2020 sway bar.

people tend to take sway bars off the 4runner vs upgrading them..
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Old 04-26-2021, 10:50 AM #3
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Those ADDCO are for the street, like if you were trying to create some sort of 4runner SRT. I doubt theres much demand for them.
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Old 04-26-2021, 04:38 PM #4
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I think most people who wanted a super firm sway bar opted for kdss initially. There are aftermarket sway bars that are more universal that you might be able to use. Also iirc Cusco made them for the fj cruiser. Might also fit the 4R. Part# is 9573111b22. So did whiteline.


The option I'd like to see is a softer sway bar for kdss models. I think there's a market for that. But I'm not holding my breath.
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Old 04-26-2021, 06:41 PM #5
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Quote:
Originally Posted by Jetboy View Post
I think most people who wanted a super firm sway bar opted for kdss initially. There are aftermarket sway bars that are more universal that you might be able to use. Also iirc Cusco made them for the fj cruiser. Might also fit the 4R. Part# is 9573111b22. So did whiteline.


The option I'd like to see is a softer sway bar for kdss models. I think there's a market for that. But I'm not holding my breath.
Are you talking about XREAS? I thought KDSS is basically a fancy end link disconnector. Which is as soft as it gets because its disconnected.
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Old 04-26-2021, 08:06 PM #6
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Are you talking about XREAS? I thought KDSS is basically a fancy end link disconnector. Which is as soft as it gets because its disconnected.
KDSS has a few functions. One of which is the use significantly bigger sway bars because they can be softened on demand. The KDSS bars are 40% larger in diameter than the non KDSS version. Sway bar spring rate is proportional to diameter to the 4th power. Assuming that they have similar dimension otherwise : wall thickness, width, and lever arm effective length (not necessarily true, but I'm just giving a rough example), KDSS sway bars are 2.8 times as firm on the highway as the std bars. I think that's probably pretty close to reality. They are a lot stiffer.

The issue with being too firm is off-road between about 12mph and maybe 40-50. The valves close off the accumulator chambers at 12mph and that's when they get very firm. Sometimes too firm for smooth ride at medium speeds. A softer bar could be better for some people and still have pretty good highway ride too. The 4runner KDSS is also sort of KDSS lite compared to the Land cruiser. So it does limit travel once you start using longer travel shocks. Softer sway bars could help there too.

Last edited by Jetboy; 04-26-2021 at 08:13 PM.
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