AUTOID Carbon Fibre Competition Rear Bumper Diffuser for BMW 3 Series G20/G21 M340i (2019+) - CFRP 2x2 Twill

AutoID Competition Carbon Rear Valance for BMW 3 Series M340i G20 G21

Give your 3 Series M340i a sharper, motorsport-inspired rear profile with this AutoID competition-style carbon rear valance. Crafted from genuine CFRP in a 2x2 twill weave, this rear bumper insert delivers aggressive styling, premium build quality and dependable alignment on both G20 Saloon and G21 Touring models from 2019 onward.

Highlights

• Tailor made for BMW 3 Series M340i G20 Saloon and G21 Touring 2019+
• Real carbon fibre construction using CFRP 2x2 twill for an authentic performance look
• CAD designed for precise fitment with the factory rear bumper
• Competition-style aero profile for a more purposeful, performance-focused stance
• Strong, lightweight composite with excellent fit and finish from AutoID
• Backed by a 2 year manufacturer warranty for peace of mind

What you receive

• 1 x AutoID carbon rear diffuser panel in 2x2 twill CFRP

Compatibility

• BMW 3 Series M340i G20 Saloon 2019+
• BMW 3 Series M340i G21 Touring 2019+

Part number

AS-BG2MRDASCFR

Warranty

2 year warranty provided by AutoID.

Why buy from us

We have fitted this diffuser on our own builds and many customer cars. Feedback has been consistently positive on the fit, finish and the way it sharpens the rear of the M340i. If you want a quality carbon upgrade that looks right and fits right, this AutoID competition diffuser is a proven choice.

Fitting and installation

Professional installation is recommended. MJ Modifications offers fitting at our Warwickshire workshop. For a quote, email info@mjmodifications.co.uk.

Search terms customers use

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Notes

Please confirm your model year and trim level before ordering to ensure correct application.