BMW F90 M5 RWS Carbon Fiber Rear Diffuser
Category Rear Diffusers
Brand CenCal Motorsport
Order status In stock - ready to ship
Build data

Specs that matter for this part

Hardware

Key hardware

See product description for included components and manufacturer details.

Validation

Install notes

DIY-friendly; professional help recommended for custom setups.

Requirement

Before checkout

Use the variant selector and product description to match the correct application before ordering.

BMW F90 M5 RWS Carbon Fiber Rear Diffuser – Signature Aggression & Track-Inspired Design (2018–2023)

Transform the rear-end of your BMW F90 M5 with the most aggressive diffuser RW Carbon offers—the RWS Carbon Fiber Rear Diffuser. Designed entirely in-house at RW’s Southern California facility, this RW Signatures (RWS) part delivers unparalleled visual impact and top-tier craftsmanship.

Constructed from 100% carbon fiber, this 3-piece diffuser includes the central diffuser element plus two side extensions that wrap around the rear bumper, enhancing your vehicle’s stance from every angle. Each unit is finished in a high-gloss, UV-resistant clear coat and hand-polished to achieve a stunning showroom shine. Every piece is also quality-checked and custom-packaged for shipping worldwide.

Features

  • Exclusive in-house RW Signatures (RWS) design
  • Most aggressive diffuser option available for the F90 M5
  • Full 3-piece setup includes center diffuser and side bumper extensions
  • Constructed from lightweight and durable 100% carbon fiber
  • High-gloss UV-protected clear coat for long-lasting shine and protection
  • Designed to match OEM and RW Carbon exterior components seamlessly
  • Backed by RW Carbon’s fitment and finish guarantee
  • Hand-polished and quality-checked before worldwide shipment

Fitment

  • 2018–2023 BMW F90 M5 (Includes LCI models)
  • 2019–2023 BMW F90 M5 Competition (Includes LCI models)

Installation Notes

  • Professional installation is mandatory as rear bumper removal is required
  • Contact CenCal to schedule installation if located in Southern California
  • Installation complexity and fitment require experienced hands for best results

FAQs

Does this diffuser fit the LCI (facelift) M5?
  • Yes, it is fully compatible with all 2018–2023 F90 M5 models, including LCI and Competition variants.
Is this a full replacement or an overlay?
  • This is a complete 3-piece replacement diffuser, not an overlay.
Will this match my OEM carbon fiber parts?
  • Yes, it features a 2x2 carbon fiber weave designed to match OEM and other RW Carbon components.
Why must the bumper be removed for installation?
  • The aggressive wraparound side extensions require bumper removal to ensure proper fitment and secure installation.
Can RW Carbon install this for me?
  • Yes. If you are located in or near Southern California, contact CenCal directly to schedule installation.

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