BMW F90 M5 RWS Carbon Fiber Rear Diffuser
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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:
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In-house designed RWS (RW Signatures) exclusive
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Most aggressive diffuser option available for the F90 M5
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Full 3-piece setup: center diffuser + side bumper extensions
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Lightweight and strong 100% carbon fiber construction
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High-gloss UV-protected clear coat for long-lasting shine
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Designed to match other RW or OEM carbon components
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Fitment and finish backed by RW Carbon’s guarantee
Fitment:
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2018–2023 BMW F90 M5 (Includes LCI models)
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2019–2023 BMW F90 M5 Competition (Includes LCI models)
Installation Notes:
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Professional installation is mandatory – rear bumper must be removed
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Contact CenCal to schedule installation if you're in Southern California
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Installation time and complexity require experienced hands for optimal fitment
FAQs:
Q: Does this diffuser fit the LCI (facelift) M5?
A: Yes, it is fully compatible with all 2018–2023 F90 M5 models, including LCI and Competition variants.
Q: Is this a full replacement or an overlay?
A: This is a complete 3-piece replacement diffuser—not an overlay.
Q: Will this match my OEM carbon fiber parts?
A: Absolutely. It features a 2x2 carbon fiber weave that matches OEM and other RW Carbon components.
Q: Why must the bumper be removed for install?
A: The diffuser's aggressive wraparound side pieces require bumper removal to ensure proper fit and secure installation.
Q: Can RW Carbon install this for me?
A: Yes! If you're located in or near Southern California, contact CenCal directly to schedule your installation.
BMW F90 M5 RWS Carbon Fiber Rear Diffuser
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
Orders take 24–48 hours to process once placed. Made-to-order items begin production after processing, while in-stock items are prepped, packaged, and ship within 3–4 days from our Oceanside, CA location (please allow extra time for packages to arrive during high-volume periods). Some items may be backordered—if so, we’ll email you with status and options. Freight items such as wheels, exhausts, trunks, and hoods require additional handling time and may ship separately.
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Customer Support
Real BMW-savvy humans here. We’re available Mon–Fri, 10am–5pm PT by email and phone/text for install questions, fitment help, or order updates. Send your year/model/trim (VIN if handy) and we’ll point you to the right parts fast.
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FAQ’s
Quick answers to the most common questions: fitment & compatibility, order changes/cancellations, build & lead times, international shipping & duties, and returns/exchanges. Start there for instant clarity—then reach out if you still need a hand.
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Contact Us
Need help choosing parts or tracking an order? Send an email to our support team, support@cencalmotorsport.com
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Fitment guarantee
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About Us
Cen-Cal Motorsport isn’t just a parts shop, it’s a lifestyle for BMW enthusiasts who crave performance, precision, and style. We’re all about taking your BMW to the next level with premium parts that bring out the beast under the hood while keeping its luxury look on point.
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