Gloss Black Rear Bumper Diffuser – BMW G20 330i / M340i
Upgrade your G20’s rear styling with this gloss-black Akasaka add-on rear bumper diffuser. Built to augment the stock design, it enhances visual depth and integrates cleanly with the factory bumper for a refined yet aggressive look.
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Key Features
• Gloss black add-on diffuser designed to overlay the factory M Sport bumper — no removal required.
• Durable ABS/PP construction with UV-stable finish, engineered for both aesthetic and functional integrity.
• Plug-in style installation: mounts directly over the original diffuser with minimal modification.
• Designed to enhance rear width and depth without interfering with OEM exhaust or sensor geometry.
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Compatible Models
• BMW G20 330i Sedan (M Sport rear bumper) — model years 2023–Present (LCI)
• BMW G20 M340i Sedan (M Sport rear bumper) — model years 2023–Present (LCI)
Specifically designed for the LCI body with M Sport bumper and quad outlet geometry where applicable. Does not fit non-M Sport or pre-LCI bumpers without modification.
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What’s Included
• (1) Gloss Black Rear Bumper Diffuser (single piece)
• Installation hardware not included on most products
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Why Buy From Eterna Motorworks
Eterna Motorworks leads in premium aftermarket automotive upgrades. With over a decade of hands-on experience, we deliver parts with exacting fitment, high-quality materials, and lasting performance. If refined styling with serious presence drives your build—welcome to the team.
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Professional installation is highly recommended.
Installation hardware not included on most products.
Ensure your vehicle’s rear bumper is the G20 330i or M340i with M Sport package and LCI styling before ordering.
For full fitment checks, installation guidance, and store policy details, please refer to our policies before purchasing.
Worldwide shipping available upon request.
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Your next mod starts here. Upgrade the build the right way with Eterna Motorworks.
Pairs well with
Gloss Black Rear Bumper Diffuser – BMW G20 330i / M340i
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Product Questions
Will this fit my vehicle?
This part is made for the models listed above. If you’re unsure, send us your year, make, and model and we’ll confirm fitment for you.
What’s included?
You’ll receive exactly what’s shown. Hardware is not included unless the product description says otherwise.
How difficult is installation?
We recommend professional installation. If you’re local, you can book an install with us directly. Some parts may need trimming, drilling, or adjustment depending on your setup.
Do you ship internationally?
Yes, we ship worldwide. Contact us if you need help placing an international order.
How do I confirm fitment before ordering?
Fitment details are listed on each product page. If you’re unsure or your build has unique specs, submit the form and our team will verify compatibility before you order.
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With over a decade of hands on experience, a growing portfolio of award winning show builds, and direct relationships with top-tier brands, we make sure you get premium products, trusted service, and real automotive expertise. Our team has built multiple award winning vehicles featured at top tier shows like SEMA and Bimmer Invasion. Everything we offer is tested, trusted, and backed by real world experience.
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