CSL Carbon Roof
by Karbonius Composites
Build journal: A Special series
The CSL'ification of The Phoenix

The carbon roof swap is often the bridge too far for many in their E46 M3 builds.

I get why: this is expensive and structural.

From the myriad of CSL carbon panel roof manufacturers, I picked Karbonius for two obvious reasons: quality and credibility.

In this Special Series, I document the entire CSL'ification of The Phoenix, including the CSL roof transformation.

Cheers,

Improved chassis rigidity and aesthetics.

The pre-preg & autoclave'd carbon process was chosen for its high tensile strength and light weight. The roof comes in at 3.3 kg.

OEM Fitment.

I've done the swap. It's OEM level.

I've curated all you need to complete the swap.

The roof panel is compatible with Genuine BMW hardware.

1x1 CSL matching weave.

Using CSL matching carbon, the roof is made from 1x1 weave and finished in gloss clear.
Spec your CSL roof
CSL Structural Roof Panel
CSL Structural Roof Panel
CSL Structural Roof Panel
CSL Structural Roof Panel
CSL Structural Roof Panel
CSL Structural Roof Panel
CSL Structural Roof Panel
Karbonius Composites

E46T01

CSL Structural Roof Panel

  • ConnexPlus Process

Professional installation is required.

Cutting, welding and gluing structural adhesives are needed, and a re-clear might be needed.

Required hardware

CSL Roof Rails
- Driver (51137897926)
- Passenger (51137897925)
Roof Bow (41328242075)
Euro headliner (51442699065)
- The Euro spec doesn't have a bump on the roof. It looks cleaner.
CSL roof insulation
- Front (51488229733)
- Rear (51488229734)

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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