1:1 CSL Carbon Diffuser
by CarboProject GmbH
build journal: Special series
"Gone in 60 days" from idea to product in hand.

Most CSL diffusers available on the market are created from a negative mold of an OEM CSL diffuser with slight design variations.

This is good, but not perfect.

This 1:1 CSL carbon diffuser is created from a positive mold. It is an actual 1:1 replica of the Genuine BMW CSL diffuser milled from secretive data.

In this Special Series on my Build Journal, I take you into the details of what makes this special along with the backstory to this crowdfunding, development, unboxing, fitment reviews.

I sign off with my recommandations on if you should get the paint match service.

Matt / @m3_epoustouflant

Comes primered, and ready to be sprayed.

This is the ideal starting point for your local paint & body shop to achieve your desired color match, and paint quality.

The Ridge: 1 to 1 design.

A key design signature of the original design.

OE matching 1x1 weave

2x2 is optional.

Pre-preg & autoclave carbon fiber.

The same carbon manufacturing process BMW used on the original diffuser.

OEM fitment.

The tabs and slots are all here to fit your OEM bumper.
Spec your diffuser
1:1 Replica CSL Carbon Fiber Diffuser (RTS)
1:1 Replica CSL Carbon Fiber Diffuser (RTS)
1:1 Replica CSL Carbon Fiber Diffuser (RTS)
1:1 Replica CSL Carbon Fiber Diffuser (RTS)
1:1 Replica CSL Carbon Fiber Diffuser (RTS)
CarboProject GmbH


1:1 Replica CSL Carbon Fiber Diffuser (RTS)

  • EuroConnex Exclusive
  • Factory Direct Process

1 sold of 10

10% funded

No quantity thresholds. When you put in an order and the invoice sent by CarboProject gets paid, your CSL diffuser production is officially on.

Calculating time remaining

Regular price $999.00 Sale price$899.00

"It’s the truth, my buddy just bought a status Gruppe one. He mine and instantly regretted his purchase. He noticed it from 10 feet away."

Installation Notes

No hardware is required. This re-uses push pins for lower slots and the upper section is clipped in using tabs on the diffuser.

I recommend you get 6x new clips (SKU: 51118174185).

The Master Mold Creation Process

made in germany
The OG Connex

René is the original Connex: the one who first trusted me and started it all.

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