2021-2023 BMW M4 Competition - Rear Diffuser

Price includes FREE SHIPPING anywhere in the US.

All aero is designed, produced, and shipped out of California.

Made out of 6mm thick Aluminum Composite Material (ACM). ACM possesses excellent UV resistance, weatherability, anti-corrosion skin, and can be easily cleaned allowing the material to maintain its sleek and brilliant look.

It is precisely cut by our professional grade CNC machine.

Laser engraved in-house to ensure a consistent, high quality finish. All aero can be installed by the purchaser although a professional install is recommended.

If applicable, please reference the images shown in this listing to ensure this diffuser will fit your vehicle.

2021 BMW M4 Competition
2022 BMW M4 Competition
2023 BMW M4 Competition

This Rear Diffuser was designed to fit the OEM bumper. Removing splash guards for better fitment is recommended.

(Please email us if you have questions about fitment)

Main Panel
Driver Side Panel
Passenger Side Panel
Carbon Fiber PETG Mounting Brackets
Stainless Steel Hardware
Installation Guide

Drill
Screwdriver
¼” Wrench
10mm Wrench