[madriz]

When do you think these arms will go on sale for our F3x?

At the moment they are for series 1 and 2.


https://mp-uk.com/choose-your-car/bm...2-e87-e88-all/

[andino]

Superpro bushings haven't holding up well in the LCA on f3x. Mine was completely cooked after a couple thousand miles. I'd inquire if superpro plans to make them more robust to lateral movement because the LCA bushing is susceptible to more than just vertical movement that the poly was designed for.

[CrushJelly]

The link is for the E series chassis. When the F series stuff comes out, the same part will fit 1, 2, 3 and 4 series.

I will keep repeating the same thing:

- SuperPro have pulled the LCA bushings from their store. They have recognised the PU prematurely fails in that LCA joint.

- the above product linked by the OP is for the full LCA and tension arm replacement kit. SuperPro have already prototyped these and are waiting for manufacturing capacity to release them. They are based off the Lemforder F80 arms.

I have the prototype on my car. Graham (SuperPro CEO) personally delivered and oversaw their installation to replace the failed bushings.

[andino]

Originally Posted by Jahjaman

The link is for the E series chassis. When the F series stuff comes out, the same part will fit 1, 2, 3 and 4 series.

I will keep repeating the same thing:

- SuperPro have pulled the LCA bushings from their store. They have recognised the PU prematurely fails in that LCA joint.

- the above product linked by the OP is for the full LCA and tension arm replacement kit. SuperPro have already prototyped these and are waiting for manufacturing capacity to release them. They are based off the Lemforder F80 arms.

I have the prototype on my car. Graham (SuperPro CEO) personally delivered and oversaw their installation to replace the failed bushings.

Do you have photos of the new (updated) LCA bushing? I'd like to see what kind of improvements they made to make it so they're more robust.

Another note is that if the new arms are based on the f80 arms, then that's a non-starter for xdrive cars as the the f8x arms offset the carrier to the point where axles slip out.

[FaRKle!]

Originally Posted by Jahjaman

I have the prototype on my car. Graham (SuperPro CEO) personally delivered and oversaw their installation to replace the failed bushings.

Is the LCA part a monoball? The E-series part looks to be from those photos.

[CrushJelly]

Originally Posted by FaRKle!

Is the LCA part a monoball? The E-series part looks to be from those photos.

Yes, the SuperPro parts will identical to Lemforder, which is identical to "M" branded F80 arms - so yes, monoball joint for the SuperPro LCA.

The UCA/tension arm will have a PU bush on one end where the "M" branded OEM parts use a harder rubber bush.

So basically, if the "M" branded stock F80 arms use:
- a monoball (LCA), the SuperPro version will also use a monoball.
- a rubber bush (UCA/tension arm), the SuperPro version will use a PU bush.

[CrushJelly]

Originally Posted by andino

Do you have photos of the new (updated) LCA bushing? I'd like to see what kind of improvements they made to make it so they're more robust.

Another note is that if the new arms are based on the f80 arms, then that's a non-starter for xdrive cars as the the f8x arms offset the carrier to the point where axles slip out.

There is no update to the camber adjustable LCA bush. They will only do the full arms going forward, which will use monoball joints.

And yes, all this development is for RWD cars only, as far as I'm aware. We don't get X-Drive in Australia.

[madriz]

Originally Posted by Jahjaman

Yes, the SuperPro parts will identical to Lemforder, which is identical to "M" branded F80 arms - so yes, monoball joint for the SuperPro LCA.

The UCA/tension arm will have a PU bush on one end where the "M" branded OEM parts use a harder rubber bush.

So basically, if the "M" branded stock F80 arms use:
- a monoball (LCA), the SuperPro version will also use a monoball.
- a rubber bush (UCA/tension arm), the SuperPro version will use a PU bush.

Why use pu when M don't use it?

[andino]

Originally Posted by madriz

Why use pu when M don't use it?

That's what superpro currently offers for their standalone LCA bushing. It looks like SuperPro Aus is working on a monoball solution for the LCA for sDrive cars. So hopefully you have an sDrive car and not xDrive. Otherwise, other parts of the world still seem to selling the PU standalone busing from SuperPro (which is what I would avoid for the LCA).

Edit: Oops, I misread your comment. f8x uses a PU bushing still in the tension strut/UCA. That's what is available for other aftermarket options as well and they hold up without too much trouble. Its moving from a monoball/liquid filled bushing to a PU bushing on the LCA that's an issue. One which they're addressing for sDrive.

[CrushJelly]

Originally Posted by madriz

Why use pu when M don't use it?

Why upgrade from rubber subframe bushes to PU bushes?
Why replace any rubber part with PU?

Because PU is better for performance than rubber.
It was just very unfortunate that PU was not suitable for use in the LCA joint due to the rotation.

Originally Posted by andino

f8x uses a PU bushing still in the tension strut/UCA. That's what is available for other aftermarket options as well and they hold up without too much trouble. Its moving from a monoball/liquid filled bushing to a PU bushing on the LCA that's an issue. One which they're addressing for sDrive.

Yep, this. Although to be pedantic, I believe that stock F8x arms use a hard rubber, not PU.