G8X Carbon Fiber MP Diffuser - G80 M3 | G82/G83 M4
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G8X Carbon Fiber MP Diffuser – G80 M3 | G82/G83 M4
Ready to give the rear end of your G8X M3 or M4 the aggressive, track-inspired look it deserves? Our Carbon Fiber MP-Style Diffuser is the perfect upgrade to instantly elevate your BMW’s appearance while enhancing its aerodynamic performance.
Inspired by the factory BMW M Performance design, this diffuser offers the perfect blend of OEM styling and aftermarket flair. The sharp lines, sculpted fins, and premium carbon fiber construction work together to create a rear profile that demands attention — whether you’re cruising through the city or staging at the track.
Premium Craftsmanship:
Each diffuser is meticulously crafted from high-quality 2x2 carbon fiber weave, ensuring a strong yet lightweight structure with excellent fitment. Precision manufacturing guarantees it integrates seamlessly with your factory bumper, aligning perfectly with existing mounting points for a clean, factory-like installation.
Aggressive Design Meets Function:
The extended fins channel airflow more efficiently, reducing turbulence at the rear and enhancing stability at speed. Paired with its glossy carbon fiber finish, it not only looks incredible but also performs where it counts.
Finish & Shipping:
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Available in Gloss UV-Protected Clear Coat to prevent fading and yellowing over time
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Ships quickly from our Los Angeles, California warehouse for fast delivery within the U.S.
Installation Notes:
Professional installation is highly recommended. The diffuser mounts in place of your factory piece, requiring removal of the stock diffuser and proper alignment to ensure a snug, secure fit.
Fitment:
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2021+ BMW G80 M3
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2021+ BMW G82 M4 (Coupe)
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2021+ BMW G83 M4 (Convertible)
Upgrade to the Carbon Fiber MP Diffuser today and give your G8X a rear-end transformation that’s as functional as it is stunning.
G8X Carbon Fiber MP Diffuser - G80 M3 | G82/G83 M4
Buy with confidence
Fitment guarantee
Engineered for your BMW. Guarantee applies with professional installation — if it doesn’t fit, we fix it.
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Shop with confidence. Every order runs through encrypted PCI-compliant checkout, with Affirm financing available so you can mod now, pay later.
Real Support
Talk to real enthusiasts — not bots. Our team answers every email the same business day (Mon–Fri, 9AM–5PM PST) so you’re never left hanging when it comes to your build.
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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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 vibes on point.
Your BMW isn’t just a car—it’s an experience. Whether you're upgrading for speed, handling, or simply flexing on the road, we’ve got the gear to match your passion.
Why settle for stock? Explore our lineup and see how real quality transforms the drive. Got questions? Hit us up anytime—your ride deserves nothing but the best.