The E46 M3 CSL was a masterpiece we regard as a classic, yet it was also a call to the future of BMW M.
Beyond the material science and its application to BMW M street cars - the design language also evolved.
The CSL introduced roundedness in its shapes unlike most BMW designs: I find the integrated ducktail'ed trunk embodies this change the most.
Many replicas came and went for these trunks. This is the Karbonius Composites version.
Enjoy,Matt / @m3_epoustouflant
The Karbonius CSL Carbon Fiber Trunk was designed by using the OEM CSL Trunk (41-00-7-895-884) to build the negative mold.
The interior has been slightly updated with design touches to make the interior more appealing.
The CSL trunk is made from multi carbon pieces that are bonded together to create the trunk. Each component is made from pre-preg & autoclaved large 4x4 weave carbon fiber.
The Karbonius version barely weights 5.5kg over the 11.5kg of the OEM CSL trunk that was made from Sheet Moulding Compound (SMC) in Italy for BMW M.
All necessary holes for the installation are pre-cut to slightly tighter tolerances than OEM for accessories: badge, lights, locks, etc. This will give leeway to your body shop to adjust.
If you do not run the CSL liner, the interior is mindfully finished and an embossed section was created to apply an M logo.
Carbon layers are added to wing mounting points. It is only needed for motorsport applications and is not required if you don't plan on bolting a wing to the CSL trunk.
The interior is available in Gloss or Matt clear coate. The exterior shel is available in primer or cleat coat exterior finish. I opted for primer exterior & matte interior.
At minimum, you will need professional paint services. I highly recommend you let a body shop fully fit the trunk. it will require slight triming to the license plate lights, lock and rubber stopper fitting holes. You will need to drill holes to fit the CSL liner as well.
Here's the parts list using Genuine BMW parts.
License plate lights:
Blind Rivet Nuts: 46632347012 (2x)
Plug Terminal (Black): 61131378149 (2x)
Universal Terminal Pin: 61136931929
License Plate Light: 63267165646 (2x)
Snap In Receptacle: 61135A07B73 (4x)
Pin Contact: 61130070562 (2x)
BMW trunk badge: 51148219237
M badge for interior: 1161783126
CSL Trunk liner: 51497896451
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.