ABS Rear Diffuser for BMW G20 330i M340i (2019-2020)

It replaces the plain lower valance on the BMW G20 330i M340i (2019-2020) with a finned diffuser that cleans up the airflow leaving the rear bumper.

The moulded finish is even enough to use as it comes, and the material will not corrode or dent the way a steel panel does.

Fits: BMW G20 330i M340i (2019-2020)

Moulded from the BMW G20 330i M340i rear bumper profile so the outer edges meet the bumper corners cleanly.

Undo the lower bumper fixings, offer the diffuser up, and re-use the original screws where the holes align – about an hour.

Quad-exit and single-exit cars use different cut-outs – confirm from the listing photos which bumper your car has.

Finish options are gloss black, satin black or a raw moulding that is ready for body-colour paint. If you would rather have the same part in carbon fiber, we can lay it up in carbon fiber instead – just ask for a quote.

• Gloss black, satin black or raw grey finish
• Same part available in carbon fiber on request
• Set pricing when ordered together with other trim pieces
• Moulded finish for a dark car, or prep for body-colour paint

Clean with mild soap and water; if the part is heading for paint, sand it lightly and use a plastic primer first.

We are the workshop, not a reseller. Yeedercar runs its own composite shop in Shishan, Nanhai, Foshan – roughly 1,000 m2 with an autoclave, a dust-free paint booth, CNC trimming and vacuum-bagging stations, plus twelve engineers and technicians who average eight years on carbon.

Every unit is checked against a photo checklist – pinholes, weave alignment, mounting-hole position and clear-coat flow – before it is packed.

Small runs are quoted per piece; above roughly 50 pieces the tooling cost is absorbed and the unit price drops, so ask for a stepped quote.

Made to order in our workshop, typically 10-15 business days before it ships worldwide with tracking, backed by a 12-month warranty against manufacturing defects.

In the box: diffuser, screws, clips and a fitment card.