Exterior Components› Body Panels and Components

ADRO

Carbon Fiber Rear Diffuser

$2,950.00

SKU: A14A40-1301

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 ADRO carbon fiber rear diffuser is an exterior body panel designed to enhance the appearance and aerodynamics of the G8x BMW M3 and M4. It features a more aggressive design and an expertly crafted aero profile, finished in stunning carbon fiber.

This diffuser includes sharpened rear winglets and a featured rain light for improved visibility in harsh conditions. It is constructed from prepreg carbon fiber, which helps to decrease vehicle drag and improve downforce.
Show original supplier description
The ADRO carbon fiber rear diffuser is a premium aerodynamic upgrade specifically designed for the G8x BMW M3 (G80) and M4 (G82) models from 2021 onwards. Crafted from prepreg carbon fiber, this diffuser offers a more aggressive aesthetic, enhancing the vehicle's rear appearance and quad exhaust setup. Its meticulously engineered aero design contributes to reducing vehicle drag and improving downforce. The diffuser features sharpened rear winglets and an integrated rain light, which not only aids in discharging air from under the vehicle but also enhances visibility during track conditions. The product includes the carbon rear diffuser, 3M tape, and screws for installation. Fitment is guaranteed, and quality is assured. It is important to note that this diffuser does not fit G83 BMW M4 convertible models. Additionally, it is not compatible with the M Performance Center Exhaust. Professional installation is highly recommended by the manufacturer to ensure proper fitment and function.

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

BrandADRO
Part NumberA14A40-1301
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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