Pre-Preg Carbon Mirror Caps
by Karbonius Composites

BMW M GbmH has recently began discontinuing the M Performance product line for the E9X M.

They started with one of it's most sought after product: the carbon fiber mirror caps. 

They were their most popular product in the lineup for a reason: they improved the overall aesthetics and they were 10/10 quality.

Also, they were 750$ US (!)

This successfull crowdfunding project led to the creation of an OEM replica with an optional twist.


Matt / @m3_epoustouflant
Recreating a 1:1 replica
I wrote a short series on the development, prototype adjustments, my impressions along with behind-the-scenes content to the crowdfunding.

The Specs

Pre-preg & autoclave carbon

Just like the OEM M Performance caps, the Karbonius caps are made using a negative mold of the OEM mirror caps. It produces a 100% carbon fiber cap with perfect weave alignment.

Weave Options

Karbonius offers the mirror caps in standard M performance style 2x2 weave or you can opt to match the OEM carbon roof 1x1 weave pattern.

3D printed brackets

The 4x brackets on the inner shell are 3D printed and glued to align with your OEM mirror clips.

Spec your carbon caps
E9X/1M Carbon Fiber Mirror Caps
E9X/1M Carbon Fiber Mirror Caps
E9X/1M Carbon Fiber Mirror Caps
E9X/1M Carbon Fiber Mirror Caps


E9X/1M Carbon Fiber Mirror Caps

  • Factory Direct Process
Regular price$419.00

Installation Notes

Removing the OEM caps is probably the most nerve racking part of this. They are made from ABS plastics. It likes heat. Make sure you work in a heated environment. 

Apply gentle pressure at the edges all around. 

Pull. Pull harder. 

Made in Spain
Ana: the Spanish Connection.

Karbonius Composites is a leading manufacture of BMW M street & motorsport carbon products.

They have been on the rise since mid 2010s and establishing themselves as a leading manufacturer in the industry.

Quality, and most importantly customer service have set them apart.

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