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Old 08-11-2021, 02:20 PM   #1
csmithwrx'05
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Default '21 WRX Swaybars/Endlinks/OEM+

My first post in MANY years (previously owned a '05 WRX, sold a few years back). I now own a '21 WRX and am looking to get more of an OEM+ feel out of the suspension. I live in a more rural area (maybe 25 minutes from the mountains) with tons of hills, elevation changes, and twisty back roads which I enjoy driving daily.

I initially was doing the research on swaybars, as my previous WRX swaybars & Kartboy endlinks were an excellent upgrade. After learning more about the '21 I now understand that it comes with 24mm front/20mm rear swaybars. This makes sense, as immediately when driving the '21 I noticed the handling was very similar to my modified '05 (which had most of the DD suspension mods). Thus, the stock sways are pretty big, especially when compared to the previous generation WRXs.

After reviewing many threads/forums/google searches I think keeping the stock sways is the way to go or at most upgrading to a 22mm rear sway (to get a bit more neutral balance). However, I still want a bit more responsiveness and I thought maybe getting the below will allow the stock sways to work more efficiently and get me closer to the OEM+ feel I am seeking.

Here is what I am considering getting:

1) Super Pro Front & Rear Sway Bar Bushings
2) Torque Solution Rear Sway Bar Brace
3) SuperPro Front and Rear Endlinks

Is it worth upgrading the endlinks while still using the stock swaybars?

Any thoughts/recommendations would be greatly appreciated.
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Last edited by csmithwrx'05; 08-12-2021 at 10:52 AM.
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Old 08-12-2021, 12:50 AM   #2
speedyHAM
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Upgrading endlinks makes just as much of a difference as upgrading the sway bar itself. Each part changes the overall stiffness of the spring (a swaybar is a spring that acts with roll of the vehicle), so increasing the stiffness of the endlinks increases the stiffness of the system.

I doubt there will be any noticeable change in handling with the rear sway bar brace based on the geometry of the rear suspension and subframe. I don't see it providing any significant stiffening unless you are running a huge rear swaybar.

Good luck with your improvements.
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Old 08-12-2021, 10:42 AM   #3
csmithwrx'05
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speedyHAM..thanks for the input. The rear sway brace is only $41 so I figured why not, but I will likely save the $ as you suggested.

Additionally, I have edited my original post as after more research I think SuperPro Front/Rear endlinks are the way to go.

Kartboy and Torque solution front endlinks both use an M10 (10mm bolt). This fits the previous gen WRXs and "works" with the 2015+. However, the 2015+ actually use a m12 (12mm bolt). This is only an issue for the front sways I believe. But, based on information/specs that I have read the only front endlinks that I have found that use m12 (and are affordable/not super track oriented) are the SuperPro, these RalliTek, and possibly Moog (but they are only a slight upgrade over OEM I believe).

Last edited by csmithwrx'05; 08-12-2021 at 10:58 AM.
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Old 08-12-2021, 09:56 PM   #4
ronemus
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Whiteline usually includes braces with upsized swaybars, and they're tubular so the reinforce in all directions. A flat brace as pictured will only work under tension. The mounting point from the factory is moderately flexible, so you need reinforcement to benefit from the stiffer bar. I've used larger rear bars on all of my Subarus to get them close to neutral; in your situation I would go with the 22mm rear bar.
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Old 09-03-2021, 08:03 PM   #5
chunktwo
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I thought 2018+ the rear sway is 19mm

The 2015 to 2017 was 20mm in the rear..

I may have the years slightly off - but the diameter in the rear went down 1mm
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Old 09-07-2021, 08:52 PM   #6
Big-E
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Quote:
Originally Posted by chunktwo View Post
I thought 2018+ the rear sway is 19mm

The 2015 to 2017 was 20mm in the rear.

I may have the years slightly off - but the diameter in the rear went down 1mm
I checked and this is correct.
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