CMP engineering contact info?

[Tbonem3]

The brace goes on top of his other products. The top side beam and extensions are the main pieces. I wonder why you'd bother with the brace. Just more rigidity I guess.

I added simply a rear strut bar (I only have plates/bushings), and noticed an increase stiffness for sure.

[BMWahba]

Lets get those subframe bushings back in stock!

[AussieE46M3]

Is this a replacement/alternative to the original design, or an addition? Seems like it's no longer transferring the load into the frame rails, but instead to the shock towers...

As Tbone said, it's an addition to the other two reinforcement kits. They link the RACP to the frame rails, this then ties the shock towers into equation to triangular the lot for added rigidity.

He's also correct in that it's simply for chassis rigidity although, does technically reinforce the mounts further.

I personally removed it from my car as it's just a dedicated daily now and it was so rigid that it would aggressively see-saw when going in and out of the basement carpark in my apartment building. Felt bad for the diff.

Lets get those subframe bushings back in stock!

I'm doing the best I can!

I've got a lot of parts on order and COVID isn't making things easier.

I should have a solid ETA today.