BMW G8X M3/M4 Rear Diffuser


Make that quad exhaust pop even more with the ADRO carbon fiber rear diffuser for the G8X BMW M3/M4. Featuring a more aggressive design, carefully engineered aero, and a beautiful carbon fiber finish, this is by far the highest quality and most aggressive rear diffuser currently available for the G8X platform.

Learn more about our BMW G8X M3/M4 Facelift Kit



M3: A14A30-1301
M4: A14A40-1301

Compatible with:

2021-2023 BMW M4 Standard
2021-2023 BMW M4 Competition
2023 BMW M4 CSL
2021-2023 BMW M3 Standard
2021-2023 BMW M3 Competition

Kit includes:

Rear Diffuser


Prepreg ("Dry") Carbon Fiber



M3: 721 mm x 1,760 mm x 276 mm
M4: 698 mm x 1,860 mm x 300 mm

What’s in the box:

Rear Diffuser
3M Tape

Installation guide:

Professional installation only




11 pieces in stock

Note: If zero stock above (or minus!), this will be backordered and due in our July/August 2024 shipment.

You can return new and unopened items within 30 days from the original date of purchase. 

Please refer to our full Returns Policy.

Free shipping Australia-Wide!

Please refer to our Shipping & Returns page for further information.