Welcome to
SCL Performance
POPULAR MODS
WE HAVE
NO LIMITATIONS
Built for the few who demand more.
SCL Performance exists for the drivers who never settle.
My Store
AK Style Carbon Fiber Rear Diffuser - BMW G80 M3 & G82/G83 M4
$23,468.00
Transform the rear end of your BMW G80 M3 or G82/G83 M4 with the AK Style Carbon Fiber Rear Diffuser. Designed to enhance your vehicle’s aggressive stance, this diffuser not only adds a striking visual upgrade but also improves aerodynamics for optimal performance. Experience a perfect blend of style and functionality...
View full details
Browse our featured products by category
COMING SOON
To Moorpark, CA.
- Stress-Free Installations: Our techs handle the install so you don’t have to. Just drop off and drive out — no hassle.
- White-Glove Service: Personalized support and expert care from start to finish. We treat every build like it’s our own.
- Quick + Easy Pickups: On your time. Grab your order with flexible pickup options that keep things moving.
Free Shipping
On all Orders Above $400
Customer Service
24/7 Customer Support
Technical Support
Installation and Technical Help
Pristine Quality
Guarantee for All Products
FAQ
Will these parts fit my specific BMW model and year?
Yes — every product page includes a“Will This Fit”section to ensure compatibility. If you’re unsure, just send us your VIN or model/year, and our team will confirm fitment for you within 24 hours. We specialize in BMW and European vehicles, so you’re in good hands.
Are these genuine carbon fiber or carbon fiber overlay parts?
We offer only full carbon fiber options. Each listing clearly specifies the construction material. Rest assured, we only source high-quality parts that are durability-tested and made to OEM or better standards.
How long does shipping take and where do you ship from?
Most orders ship from our Irvine, CA warehouse within1–3 business days. Domestic delivery typically takes3–7 business days. International shipping times vary by country. Each product page includes real-time shipping estimates based on your location. Certain made to order products will take up to3-4 weeksfor delivery, including production time.
Do I need professional installation or can I install it myself?
Many of our mods are designed for direct bolt-on installation and can be installed at home with basic tools. However, for certain parts like aero kits or performance components, we recommend professional installation for best results. Each product page includes install difficulty and notes. We offer professional installation at our Irvine, CA location. You caninquire here.
What if the product doesn’t fit or I change my mind?
No worries — we offer hassle-free returnswithin 30 days of delivery. If the part doesn’t fit due to an error on our end, we’ll cover the return shipping. For all other returns, we make it easy to exchange or get a refund. See our full Returns & Warranty Policy for details.
Are your parts tested for quality and durability?
Absolutely. All of our products go through quality control checks and are either TUV-certified, ISO-certified, or tested by our in-house team and verified installers. We don’t sell anything we wouldn’t put on our own cars.