Exterior Components› Body Panels and Components

3D Design

Carbon Rear Diffuser

$2,995.00

SKU: 3108-38212

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 G8X M3 / M4 Carbon Rear Diffuser is an exterior body panel designed to enhance the aesthetic of the BMW G80 M3 and G82 M4. It integrates with the factory rear bumper, completing the lower rear fascia with a carbon structure. The diffuser is constructed from 2x2 pre-preg carbon fiber with a gloss clearcoat finish.
Show original supplier description
The 3D Design G8X M3 / M4 Carbon Rear Diffuser provides a motorsport-inspired aesthetic upgrade for the BMW G80 M3 and G82 M4 models. It is engineered to frame the factory quad exhaust outlets, enhancing the performance character of the M3 and M4. Installation is straightforward as the diffuser attaches directly to the factory rear bumper assembly without requiring any cutting or permanent modifications. The product includes all necessary installation hardware and instructions. Designed and manufactured in Japan, 3D Design components are recognized for their precision fitment, durability, and practical application, blending motorsport influence with street usability. **Vehicle Fitment:** * BMW G80 / G81 M3 * BMW G82 / G83 M4

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 Number3108-38212
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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