This kit envelops the top face of the Rear Axle Carrier Panel (RACP) and directly links the threaded insert within to the chassis rails via vertical tubes into a newly introduced member positioned between the existing rails in a ‘H’ configuration.
In addition to the corrected load path, the kit integrates into the existing structure forming a open ended universal beam in cross section rather than two members bending in parallel to further magnify the increased structural rigidity.
The combination of this kit with underside plates provides a complete comprehensive top and bottom reinforcement for E46 convertibles, sedans and wagons.
For coupe’s & sedans with split folding rear seats, the sheet metal beneath the rear bench seat is prone to separate form the chassis rails as well as cracks forming around the baby & seat belt anchors due to the reduced rear bulkhead structure.
CMP Auto Engineering offers a Front Mount Extension Kit designed specifically for E46 3-series BMW’s with split folding rear seats that expands on the topside beam kit to incorporate the front two, rear subframe mounts to address problem areas specific to these E46 shapes.
For those who intend not to opt for the complete 6-point race brace or are unable to with a convertible chassis, we strongly recomend that you select the ‘Without Holes’ option for a more aesthetic finish. The two options have no impact on structural integrity or function however, provide a smooth top face as per the images above. If the no holes option is fitted and a brace is to be fitted later on, the holes will need to be drilled manually.
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