F8X M3/M4 LED K Style Diffuser (Used, Scratched)
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Add an aggressive, performance-inspired look to your BMW F8X with the LED K Style Rear Diffuser. Featuring an integrated LED light bar and bold, sculpted fins, this diffuser transforms your rear end with a race-ready aesthetic while maintaining OEM-style fitment. Constructed from durable materials with a high-gloss carbon fiber finish, it’s designed to handle spirited driving while enhancing both form and function.
This unit is used and in 6.5/10 condition, with visible scratches on the underside from previous road scraping. The diffuser remains fully functional, with no cracks or structural damage, and the LED lighting is intact. Offered at a heavily discounted final sale price.
Product Features
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Aggressive K Style design with integrated LED brake/fog light
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Real carbon fiber finish for a premium motorsport look
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Precision-engineered for direct fitment on the F8X platform
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Fully functional LED lighting pre-installed (wiring may require minor setup)
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Used condition – 6.5/10, cosmetic scratches on underside from scraping
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Final Sale – No Returns or Exchanges
Compatibility
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BMW F80 M3 (2015–2018)
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BMW F82 M4 Coupe (2015–2020)
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BMW F83 M4 Convertible (2015–2020)
Installation
Professional installation is strongly recommended to ensure proper wiring, alignment, and secure fitment.
Price: $175 (Regularly $699)
Condition: Used / 6.5⁄10 / Scratched Underside / Functional LEDs / Final Sale
F8X M3/M4 LED K Style Diffuser (Used, Scratched)
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
Engineered for your BMW. Guarantee applies with professional installation — if it doesn’t fit, we fix it.
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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.
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.
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