Karbonius E9X M3 (S65) Carbon Inlet Plenum - Race

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$2,614.00
$2,614.00
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Designed for racing use. Requires custom air ducting from the kidney grille (not included).

The Karbonius E9X M3 (S65) Carbon Inlet Plenum — Race is Karbonius' most focused intake solution for the S65 V8 — a standalone carbon plenum designed specifically for motorsport applications where custom intake routing is already in place. Where BMW never developed a carbon plenum for the S65 as they did for the S54 CSL, Karbonius engineered this Race Plenum using modern 3D and 2D flow analysis to optimize the air volume and internal geometry that feeds the engine — resulting in improved engine efficiency and a power gain.

The exclusive design minimizes internal turbulence while maximizing the volumetric efficiency of the naturally aspirated V8. Beyond the power benefit, the Karbonius Race Plenum delivers a dramatic induction sound and transforms the appearance of the S65 engine bay with motorsport-grade carbon fiber construction.

Manufactured from 100% prepreg carbon fiber in 2x2 twill weave and autoclave-cured in Spain under ISO 9001 quality management standards, the plenum is paired with CNC machined aluminum components for precision fitment. Optional OEM ///M and V8 badges are available and are not included as standard.

What's Included

  • Carbon inlet plenum in 2x2 twill weave
  • CNC machined aluminum components
  • Numbered certificate of authenticity

Product Details

  • 2x2 twill prepreg carbon fiber construction
  • CNC machined aluminum hardware and fittings
  • Optimized internal geometry for improved airflow and reduced turbulence
  • Dramatic S65 V8 induction sound
  • Autoclave-cured for strength and finish quality
  • Individually numbered for authenticity

Important Notes

  • Custom kidney grille air ducting required — not included.
  • OEM ///M and V8 badges are optional and sold separately.
Karbonius E9X M3 (S65) Carbon Inlet Plenum - Race

$2,614.00

Does it come with a warranty?

Parts are covered by the manufacturer's warranty where one is offered. If something goes wrong, contact us and we'll help you with the claim.

What happens if I don't like it?

New, uninstalled parts in their original packaging can be returned within 30 days of delivery. Suspension components (coilovers, springs and dampers), wheel spacers and batteries can't be returned, and a restocking fee applies to approved returns. See our refund policy for details.

How fast is shipping?

In-stock orders usually ship within 1–3 business days. Many parts ship directly from the manufacturer or distributor. Orders over $200 ship free with standard shipping, and faster UPS and USPS options are available at checkout. See our shipping policy.

What's the returns policy?

You have 30 days after receiving your item to request a return. Parts must be new, uninstalled and in their original packaging. Contact us first to start a return. Full details are in our refund policy.

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