Exterior Components› Body Panels and Components

3D Design

Carbon Fiber Rear Diffuser

$4,395.00

SKU: 3108-39012

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The 3D Design BMW G90 / G99 M5 Carbon Fiber Rear Diffuser is an aftermarket aerodynamic component designed to enhance the rear aesthetics of specific BMW M5 models. It is constructed from premium pre-preg 2x2 twill carbon fiber with a high-gloss finish. This diffuser features side fins that complement the factory bumper contours and includes a replacement carbon fiber tow hook cover. Installation utilizes factory-style mounting clips for a secure fit.
Show original supplier description
This rear diffuser is meticulously crafted from pre-preg carbon fiber in a 2x2 twill weave pattern, finished with a high-gloss clear coat. Its design features integrated side fins that are sculpted to flow seamlessly with the factory rear bumper, adding a more aggressive and refined presence to the vehicle's rear end while maintaining an OEM+ aesthetic. The package also includes a replacement tow hook cover made from the same carbon fiber material for a cohesive look. This approach reflects 3D Design's commitment to both form and function, ensuring the component integrates flawlessly with the vehicle's existing lines. Manufactured in Japan, this rear diffuser is specifically designed for the BMW G90 M5 Sedan and G99 M5 Touring. It is explicitly stated that this diffuser is not compatible with standard G60 5-Series non-M5 bumpers.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand3D Design
Part Number3108-39012
CategoryExterior Components

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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