[TselaG80]

Hey All,

I just curious if anyone has seen any sort of Sway Bar upgrades around?

or any new of any companies plans on making something for the G8X platform.

[somer]

CS has diff front sway bar if you wanted to go that route.

https://parts.bmwnorthwest.com/p/bmw...358091425.html

Seems fitting if you're doing all the CS coding stuff too

[Matt@Evolve]

CSL front and rear is different.

[vasillalov]

You probably don't need to touch the rear sway bar.
Traditionally, an upgrade would be a front sway bar from convertible models as they are thicker and stiffer to combat body roll

On my E90 track car, I put H&R M3 convertible front swaybar. It's literally the thickest and stiffest available for that platform. It made the car neutral in its handling balance.

I would imagine the same logic will be applicable for our cars as well.

[PabstBleuRibbon]

Someone upgrade a 6MT with the CS front sway bar and report back

[myg80m3]

Originally Posted by vasillalov

You probably don't need to touch the rear sway bar.
Traditionally, an upgrade would be a front sway bar from convertible models as they are thicker and stiffer to combat body roll

On my E90 track car, I put H&R M3 convertible front swaybar. It's literally the thickest and stiffest available for that platform. It made the car neutral in its handling balance.

I would imagine the same logic will be applicable for our cars as well.

Hope that’s true. I’ve been looking to upgrade the sway bar on my car as well.

[M4nication]

Originally Posted by somer

CS has diff front sway bar if you wanted to go that route.

https://parts.bmwnorthwest.com/p/bmw...358091425.html

Seems fitting if you're doing all the CS coding stuff too

Hmmmm. Would this fit on an M4 Comp xDrive? I've heard the front end is identical, and I'd be interested in "upgrading" my front sway bar.

[somer]

Originally Posted by M4nication

Hmmmm. Would this fit on an M4 Comp xDrive? I've heard the front end is identical, and I'd be interested in "upgrading" my front sway bar.

Yeah, M3/M4 xDrive share front swaybars

[seals9121]

it doesn't look expensive. 300 bucks for sway bar and maybe 600 for the kit.

can anyone confirm it is thicker ? I can put it on and track test it.

[TselaG80]

do any of the links need to be changes?

or just swap out sway bars?

[Guig80]

definitely interested in this

[pg80]

Will this piece fit a rwd car ?

[evoi19]

ARC makes a set for both rwd and xdrive. You’ll have to find a way to get it here though.

https://bmwwonderland.com/products/a...-g82-m3-m4-4wd

[pg80]

I called my dealership and they couldn’t say if it will fit my rwd car I’m willing to do it but I need to know if it fits first

[shwayne5]

Please send me a message or reply in thread if you pull the trigger on these. Also looking for something bigger than stock for track build.

[TselaG80]

Has anyone seen/tried these?

https://gbp.r44performance.com/produ...80-g81-g20-g21

[PabstBleuRibbon]

In the interests of science I ordered a CS front sway bar and tried to fit it to my '23 6MT. Not a success and I had some odd findings:

Either the CS mounts it's sway bar entirely different or the part was assembled incorrectly at the factory. The bushings are bonded to the bar and are completely immobile, I think BMW has bonded other bar bushings so it's not entirely unheard of. The issue with this bar in particular is the bushings appear to be bonded 180 degrees off. See here:



You can see the flat part of the bushing is pointed away from the frame, when positioned roughly as it would when mounted.

If aligned correctly, the gooseneck part of the sway bar would go under the steering arm...this can't be right. Near as I can tell, there's no way to twist or move the bushings without destroying them, they are solidly bonded to the bar with zero give.



Even if the bushings weren't 180 off, they are spaced differently than the 6MT mounting points...they would have to be moved inward to line up with the frame mounts.



I could probably try to move the bushings but they'd have to be dremeled or cut off somehow, they are that solidly bonded.

While messing with all this, it also appeared to me that the stock 6MT sway bar and CS didn't look all that different. In fact, when I measured the center thickness with calipers, the 6MT was 24mm and the CS was 23mm. Maybe there's some materials science magic going on with the CS as it's bend/geometry is different than the 6MT. I didn't pull mine off to compare them in weight, but given the measurements I'm not sure this would be a huge change. Maybe if the CS was like 30mm or something I'd think about trying to cut the bushings and get it fitted, but this does not seem to be worth the effort.

I might try the H&R matched pair but they say that's for Xdrive only. As long as the gooseneck bend is roughly the same I don't see why they wouldn't work but 1k+ is a bit more to gamble than what the CS bar cost me. Hopefully I can just return it as I don't think it'd work on any car given the odd assembly from the factory.

hope that helps!

[somer]

the CSL sway bar would be the one you wanted to get with a 6MT would think.

https://parts.bmwmonterey.com/p/bmw_...358091420.html

Lists it fits the 3.0CSL so transmission type shouldn't have any issue, probably only not fitting because of the XDrive.

[M4nication]

Originally Posted by PabstBleuRibbon

In the interests of science I ordered a CS front sway bar and tried to fit it to my '23 6MT. Not a success and I had some odd findings:

Either the CS mounts it's sway bar entirely different or the part was assembled incorrectly at the factory. The bushings are bonded to the bar and are completely immobile, I think BMW has bonded other bar bushings so it's not entirely unheard of. The issue with this bar in particular is the bushings appear to be bonded 180 degrees off. See here:



You can see the flat part of the bushing is pointed away from the frame, when positioned roughly as it would when mounted.

If aligned correctly, the gooseneck part of the sway bar would go under the steering arm...this can't be right. Near as I can tell, there's no way to twist or move the bushings without destroying them, they are solidly bonded to the bar with zero give.



Even if the bushings weren't 180 off, they are spaced differently than the 6MT mounting points...they would have to be moved inward to line up with the frame mounts.



I could probably try to move the bushings but they'd have to be dremeled or cut off somehow, they are that solidly bonded.

While messing with all this, it also appeared to me that the stock 6MT sway bar and CS didn't look all that different. In fact, when I measured the center thickness with calipers, the 6MT was 24mm and the CS was 23mm. Maybe there's some materials science magic going on [...]

I think it's because the CS is an xDrive car, and your 6MT is not. There's quite a few changes up front to accommodate the AWD system, so it makes sense the sway bar might be designed differently because of it.

I do have an xDrive car, and I'd be curious to try and fit it on mine. I'll buy it off you to test that theory if you can't return it!

[PabstBleuRibbon]

Originally Posted by M4nication

I think it's because the CS is an xDrive car, and your 6MT is not. There's quite a few changes up front to accommodate the AWD system, so it makes sense the sway bar might be designed differently because of it.

I do have an xDrive car, and I'd be curious to try and fit it on mine. I'll buy it off you to test that theory if you can't return it!

Pretty sure you're correct, fortunately they took it on return as it was definitely assembled wrong from the factory. Might try the CSL bar, it would be nice if there were some aftermarket options.

[tom @ eas]

H&R offers Front (30mm) and Rear (27mm) swaybar kits for M3/M4 xDrive. Let me know if anyone needs help getting a set, we have matching endlinks also.

[PabstBleuRibbon]

Originally Posted by tom @ eas

H&R offers Front (30mm) and Rear (27mm) swaybar kits for M3/M4 xDrive. Let me know if anyone needs help getting a set, we have matching endlinks also.

Any idea if the H&R front mounts are fixed on the bar? if they can be moved inwards it might work on a RWD/Base model as well.