AUTOID Carbon Fibre Rear Diffuser Valance Insert for BMW 3 Series M340i G20 G21 (2019+) – CFRP 2x2 Twill Gloss, Competition/M Performance Style – Rear Bumper Diffuser/Apron Upgrade for Saloon/Sedan & Touring/Estate

AUTOID Carbon Rear Valance Insert for BMW 3 Series M340i G20 G21

Give the back end of your BMW 3 Series the motorsport look it deserves with AUTOID’s competition-style carbon rear valance for the M340i G20 and G21. Crafted from genuine CFRP with a 2x2 twill weave, this sculpted lower bumper piece has been engineered using 3D CAD for precise alignment and a premium finish that elevates stance, road presence and showroom appeal.

We have installed this part on customer cars and in our own builds. The fit, weave quality and overall appearance are spot on, delivering a purposeful race-inspired aesthetic that looks incredible on both saloon and touring models.

Key highlights

• Genuine carbon fibre reinforced polymer construction with 2x2 twill weave for a high gloss, high quality appearance.
• CAD designed for accurate fit on the M340i G20 and G21 platform for 2019 onwards.
• Competition styling with aggressive aero fins and sculpted tailpipe apertures for a wider, more dynamic rear profile.
• Suitable for both right hand drive and left hand drive vehicles.
• Tried and tested by MJ Modifications. Customers love the transformation and premium finish.

What you receive

• 1 x AUTOID carbon rear valance insert in CFRP, 2x2 twill weave

Vehicle compatibility

• BMW M340i 2019 onwards
• G20 saloon and G21 touring
• Works with both RHD and LHD cars

Fitment and installation

Professional fitting is recommended. Some adapting and adjustment is required during installation. For the best visual result, we advise upgrading the factory tailpipe tips so they fill the diffuser apertures as shown in the product images.

Want it installed by specialists? Book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Compatibility check before dispatch

To ensure you receive the correct item for your car, please provide your UK registration or the last 7 digits of your VIN at checkout.

Part number

AU-BG2MRDASCFR

Manufacturer

AUTOID

Warranty

2 Year Warranty by AUTOID

Search-friendly terms

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