BMW G30 EC Style Carbon Fiber Rear Diffuser
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Are you tired of your bland and boring looking plastic diffuser that comes from BMW on your G30 5 series? Then you need to checkout this EC style carbon fiber rear diffuser. These fit all 2017-2020 5 series with the M Sport package, which includes the 530i 530e 540i and M550. This EC Style Diffuser is made using genuine carbon fiber and will perfectly match any other G30 RW Carbon Fiber parts and/or accessories. This diffuser does require the removal of the rear bumper for installation. Due to this we highly recommend that you have either us at RW Carbon install it or another professional shop. This diffuser allows the ability to use your OEM exhaust tips or an aftermarket exhaust with quad tips. Take your G30 from bland to extraordinary in a matter of a couple hours with a new RW EC Style Diffuser.
Installation
RW Carbon requests that you must get this EC style CF diffuser installed by a professional. The diffuser does require the entire rear bumper be removed and screws inserted into the diffuser tabs. For further information feel free to email us at info@rwcarbon.com. We recommend having us install the diffuser, but if you are not local to us please reach out and we can suggest an RW authorized dealer.
Fitment
- 2017-2020 BMW G30 5 Series
- 530i 530e 540i M550i M-Sport
- Does not fit the LCI
- Note: M550i owners, stock tips create a slight interference with this diffuser. A small modification is required. Please contact cory@rwcarbon.com or 714-328-4406
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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Real Support
Talk to real enthusiasts. Our team answers every email same business day (Mon–Fri, 9AM–5PM PST) so you’re never left hanging when it comes to your build.
About Us
What started as a group of BMW enthusiasts tired of overpriced parts and limited options is now a brand trusted by thousands of owners nationwide.
We designed our own product lines from the ground up and built the production infrastructure to make them happen. No middlemen, no compromises. Just the parts we actually wanted on our own builds.
Now we operate out of Oceanside, California, engineering valved exhaust systems, carbon fiber, forged wheels, front-mount intakes, and more. Everything is designed in-house, tested on real platforms, and stocked locally for fast shipping.
This is just the beginning.