Spec your airbox

CSL 1:1 Carbon Airbox Replica

Name: CSL 1:1 Carbon Airbox Replica
Brand: Karbonius Composites
Price: 2469.0 USD
Availability: InStock

Shipping calculated at checkout.

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Specifications:

Made in Spain
1:1 exterior replica
- CNC machined aluminum bungs anodize in matte black
- Matching weave alignment to OEM
- Finishes: Gloss or Matte clear coated
- Optional carbon snorkel without flap mechanism
Complete pre-preg carbon construction cured in autoclave
- Weave pattern: 1x1 and 2x2 OEM CSL matching
- Weight: 1.7 kg
Revised trumpet design for improved performance:
- Power: +25hp (depending on tune)
Exclusive and numbered piece
5 years warranty
Fitment guaranteed

Installation Hardware

I have curated installation kits per the E46 M3's specific production years and transmission types using Genuine BMW products.

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BMW M Power sticker included.

The signature BMW M Power sticker is provided with the airbox. If you plan on installing it, I recommend it is applied and re-cleared for a seamless finish.

Optional matching carbon snorkel.

The Karbonius design mimics the original BMW M snorkel, without the flap mechanism. If spec'e with the CSL airbox, it will come in matching weave pattern and finish.

Build journal: A Special series

Buying the airbox is only half the way there.

These CSL airboxes are complex - the engineering & design expertise is not only for performance, sound but most importantly: reliability.

In this Special Series, I document my extensive experiences with CSL airboxes with 3x different airboxes I have tested.

I document the hardware checklist, the tuning dilemma between MAP v Alpha N, installation notes and my driving impressions with proper sound clips.

Cheers,
- Matt / @m3_epoustouflant

Read the special series