Exterior Components› Body Panels and Components

PSM

Dynamic Rear Diffuser w/ Rear Extensions

$2,084.53

SKU: BRF02V1CF

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The PSM Dynamic rear diffuser with rear extensions is an aerodynamic component designed to enhance the street-race style and performance of your BMW M3 (F80) or M4 (F82/F83).
Show original supplier description
The PSM Dynamic rear diffuser with rear extensions is a high-performance aerodynamic upgrade developed for the BMW M3 (F80) and M4 (F82/F83) platforms. Each unit is sculptured in-house to respect the vehicle's original heritage while providing a more aggressive aesthetic and functional aerodynamic improvements. By smoothing airflow and generating additional downforce, this diffuser contributes to greater stability during high-speed driving. It is hand-built in Southern California by master craftsmen to ensure a precise, guaranteed fit. Every kit includes all necessary installation hardware to streamline the mounting process to your specific M-series chassis. This diffuser is designed specifically for the 2015-2020 BMW M3 and M4 (F8X) series. Please ensure your vehicle trim matches the F80, F82, or F83 designation for proper compatibility, as fitment is tailored to these specific configurations.

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

BrandPSM
Part NumberBRF02V1CF
CategoryExterior Components

Videos

BMW M4 GETS AGGRESSIVE REAR DIFFUSER! | PSM STYLE | how to install video

BMW M4 GETS AGGRESSIVE REAR DIFFUSER! | PSM STYLE | how to install video

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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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