Genuine BMW M Performance Carbon Fibre Rear Dual Exit Diffuser for G80 M3/M3 Competition & G82 M4/M4 Competition (2021+) | OEM CFRP Rear Valance | Part 51128075031

Authentic BMW M Performance Carbon Fibre Rear Dual Outlet Bumper Insert for G80 M3 and G82 M4 (2021 on)

Transform the rear end of your G8X with the authentic BMW carbon rear lower valance, crafted in lightweight CFRP for a premium, motorsport-inspired finish and an OEM+ look. This twin exhaust surround replaces the standard rear bumper insert to deliver a sharper, more purposeful stance without compromising factory fitment or quality. Part number: 51128075031.

We have installed this carbon rear apron on customer G80 and G82 cars at MJ Modifications and the response has been outstanding. Owners praise the flawless alignment, deep gloss carbon weave and the way it ties the entire rear together with a true factory finish. If you want a rear bumper carbon upgrade that looks like it rolled straight out of the BMW M division, this is the one to choose.

Key reasons to choose this BMW rear lower valance

• Original BMW M Performance accessory for the G8X platform
• CFRP construction with a high-gloss lacquer for a deep carbon weave
• Twin outlet exhaust finisher surround for a bolder rear profile
• Designed for improved underbody airflow and a track-bred aesthetic
• UV-stable and heat resistant for long-term durability
• Direct replacement with OEM mounting points for precise fit
• No TUV registration required
• Seamless match with the M Carbon Exterior Package (SA71C)
• Hand-finished to BMW standards for consistency and quality

Compatibility

• BMW G80 M3 2021+
• BMW G80 M3 Competition 2021+
• BMW G82 M4 2021+
• BMW G82 M4 Competition 2021+

Part number

BMW Part No: 51128075031

Manufactured by

BMW M Performance. Genuine BMW part.

Warranty

Two-year manufacturer warranty for UK customers and one-year for international customers when a valid VIN is provided at checkout on compatible vehicles.

Fitting and installation

Engineered specifically for the G80 and G82, this rear bumper carbon insert installs using factory locations for a clean, OEM-style result. For a perfect finish, we recommend professional fitting. MJ Modifications offers installation at our Warwickshire workshop. Request a fitting quote at info@mjmodifications.co.uk.

In the box

Authentic BMW M Performance CFRP rear dual outlet diffuser/valance.

Product imagery

Search-friendly terms

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