BMW F8X M3/M4 PSM 4PC Carbon Fiber Diffuser - F80/F82/F83
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F8X M3/M4 PSM Carbon Fiber Diffuser – 4-Piece Set for a Bold Rear-End Upgrade
Transform the rear-end look of your BMW F80 M3, F82 M4 Coupe, or F83 M4 Convertible with the PSM Carbon Fiber Diffuser, now in stock and ready to ship from Oceanside, CA. This premium 4-piece set delivers aggressive styling and aerodynamic functionality, making it the ultimate upgrade for your BMW.
Aggressive PSM Design
The bold PSM-inspired design amplifies the rear-end aesthetics of your F8X, giving it a sporty, track-inspired appearance that demands attention.
High-Quality Carbon Fiber Construction
Crafted from premium-grade carbon fiber, this diffuser set is lightweight yet strong, ensuring durability and long-lasting performance. The high-gloss clear coat protects against UV damage, fading, and minor road debris, maintaining its sleek finish over time.
Comprehensive 4-Piece Set
This kit includes everything you need for a complete visual transformation:
- Rear diffuser
- Two side extensions
- Rear undertray
The cohesive design ensures a balanced and aggressive upgrade that enhances your BMW’s sporty appeal.
Direct Replacement with Seamless Fitment
Designed as a direct replacement for your stock diffuser, the PSM Carbon Fiber Diffuser offers precise OEM-like fitment, integrating seamlessly with the rear bumper of your F8X M3 or M4.
Professional Installation Recommended
While the installation process is straightforward, professional installation is recommended to ensure optimal results and a secure fitment.
In Stock & Ready to Ship from Oceanside, CA
This PSM Carbon Fiber Diffuser is in stock and ships directly from our Oceanside, CA location, ensuring fast delivery and careful packaging to reach you in perfect condition.
Fitment:
The PSM Carbon Fiber Diffuser is compatible with the following BMW models:
- 2015–2019 BMW F80 M3
- 2015–2020 BMW F82 M4 Coupe
- 2015–2020 BMW F83 M4 Convertible
Why Choose the PSM Carbon Fiber Diffuser for Your BMW?
This 4-piece diffuser set is a must-have for enthusiasts seeking aggressive styling, premium materials, and precision fitment. With its comprehensive design and aerodynamic benefits, it transforms the rear end of your F8X into a bold, standout feature that’s perfect for road or track use.
Upgrade your BMW F80 M3, F82 M4, or F83 M4 today with the PSM Carbon Fiber Diffuser, in stock and ready to ship from Oceanside, CA. Experience the perfect combination of performance, style, and quality!
BMW F8X M3/M4 PSM 4PC Carbon Fiber Diffuser - F80/F82/F83
Buy with Confidence
Fitment guaranteed
Engineered for your chassis. Coverage applies with professional installation. If it does not fit, we fix it.
email support
Mon to Fri, 9 am to 5 pm PST at support@cencalmotorsport.com.
Installs and local pickup
Oceanside shop. Text 831-586-0006 to book or reserve in-stock parts. Same day pickup available when in stock.
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.