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Exterior Components› Body Panels and Components

RW Carbon

GTX Carbon Fiber Rear Diffuser

Name: GTX Carbon Fiber Rear Diffuser
Brand: RW Carbon
SKU: bmwf8x028

$2,500.00 $1,769.95 Save $730.05

SKU: bmwf8x028

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$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The RW Carbon GTX Carbon Fiber Rear Diffuser is a 4-piece exterior enhancement designed for BMW F80 M3, F82 M4, and F83 M4 models from 2015-2020. It features GTX styling for an aggressive appearance. The kit includes the main diffuser, two side extensions, and an undertray.

Show original supplier description

The RW Carbon GTX Carbon Fiber Rear Diffuser is engineered to provide the most aggressive aesthetic for your BMW F8x M3 or M4. This 4-piece kit comprises the main rear diffuser, two side extensions, and a substantial undertray, designed to significantly enhance the vehicle's rear-end appearance and aerodynamic profile. Crafted from genuine 2x2 carbon fiber, this diffuser ensures a premium look and feel, seamlessly matching other RW Carbon or OEM carbon fiber parts. It is finished with a UV-resistant clear coat to protect against sun damage and maintain its lustrous appearance. Installation is a bolt-on process, utilizing a combination of OEM screws/mounting locations, supplied hardware, and self-tapping screws, requiring no special modifications. However, due to the size and complexity of the installation, professional fitting is highly recommended. RW Carbon can assist with installation if you are local or can recommend qualified shops. This GTX diffuser is specifically designed for the 2015-2020 F80 M3, the 2015-2020 F82 M4, the 2015-2020 F83 M4, and the 2016-2020 F82 M4 GTS & CS models.

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.

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Specifications

Brand	RW Carbon
Part Number	bmwf8x028
Category	Exterior Components

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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.

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