Rear Diffusers Carbon Fiber BMW G20 3 Series

Carbon fiber rear diffusers for the BMW G20 3 Series M Sport rear bumper: BMW G20 M340i, as well as the 330i and 320i/320d with the M Sport package. The diffuser fits on the lower section of the rear bumper and gives the rear of the car a race-car character; several styles are also available with an LED light.

Pre-order: the following versions are made to order, with an expected delivery time of more than 30 days: KB Style – Pre-LCI M340i, FD Style – LCI M Sport and AD Style – LCI M Sport.

Available styles

• MP Style – in separate versions for the M340i and the 330i M Sport bumper, in both pre-LCI and LCI form. The LCI version is a three-piece set with a UV-resistant high-gloss clear coat.
• TK Style – race-car shape with a vertical or horizontal (F1-style) brake light design; for pre-LCI and LCI M Sport bumpers.
• TK Style LED – TK-shaped diffuser with an integrated F1-style LED light; pre-LCI.
• KB Style – aggressively styled carbon diffuser for pre-LCI cars, with mounting hardware. A separate three-piece version that follows the lines of the bumper is made for the pre-LCI M340i bumper.
• KB Style LED (diffuser + splitters) – diffuser and rear side splitters as a set, with an integrated F1-style LED light; pre-LCI.
• Euro Style – sporty diffuser for LCI cars, in M340i and 330i M Sport versions, with mounting hardware.
• Euro Style V1 and Euro Style V2 – V1 is sporty and aggressive, V2 has a sharper profile; pre-LCI.
• CMST Style LED – bold, race-car shape with an integrated LED light; pre-LCI.
• AC Style – sharp, dynamic profile, UV-resistant high-gloss clear coat; pre-LCI.
• DTM Style – handmade carbon diffuser with a UV-resistant high-gloss clear coat, for the 2019–2022 330i M Sport and M340i bumper. Not compatible with the factory exhaust tips; aftermarket exhaust tips or an aftermarket exhaust system are required.
• Performance Style – two-piece (center and outer section) carbon diffuser, exclusively for the pre-LCI 330i M Sport bumper; does not fit the M340i.
• FD Style – multi-piece (approx. 5-piece) rear diffuser set: a large centre section with vertical fins, two side end pieces and corner splitters; works with most aftermarket exhaust tips.
• AD Style – three-piece rear diffuser: a finned centre section and two side pieces with upturned winglets, for the LCI bumper.
• AD Style – three-piece rear diffuser with a finned centre section and two separate corner splitters, for the pre-LCI bumper.
• KB Style (matte carbon) and KB Style (forged carbon) – the three-piece KB Style diffuser (vertical fins wrapping round to the sides, side canards) in matte or forged pre-preg dry carbon.
• KB Style LCI V1, KB Style LCI V1 (matte carbon) and KB Style LCI V1 (forged carbon) – three-piece set for the LCI bumper: a rear diffuser with vertical fins and a central red light plus two rear bumper canards, in pre-preg dry carbon, mounting to the factory fixing points.
• KB Style LCI V2, KB Style LCI V2 (matte carbon) and KB Style LCI V2 (forged carbon) – aggressive three-piece set for the LCI bumper: a rear diffuser with tall vertical fins and a central red light plus two rear bumper canards, in pre-preg dry carbon.
• PM V1 Style – one-piece wide rear diffuser with short fins, made specifically for the LCI 330i M Sport rear bumper.

Photo coming soon for the following versions: DTM Style, Performance Style, FD Style – LCI M Sport, AD Style – LCI M Sport, AD Style – Pre-LCI M Sport, KB Style (matte carbon) – Pre-LCI M Sport, KB Style (forged carbon) – Pre-LCI M Sport, KB Style LCI V1 – LCI M Sport, KB Style LCI V1 (matte carbon) – LCI M Sport, KB Style LCI V1 (forged carbon) – LCI M Sport, KB Style LCI V2 – LCI M Sport, KB Style LCI V2 (matte carbon) – LCI M Sport and KB Style LCI V2 (forged carbon) – LCI M Sport.

Compatibility

BMW G20 3 Series Sedan (2019 onwards); not for the G21 Touring. The diffusers are made for the M Sport rear bumper (M340i, or 320i/330i/320d with the M Sport package) and do not fit the base, Sport Line or Luxury Line bumper. Unless the manufacturer states otherwise, this is the general rule for G20 aero parts – please check with us before ordering.

• Pre-LCI or LCI: the pre-LCI (2019–2022) and LCI (from July 2022, 2023 model year) rear bumpers differ; select the one matching your car in the “Rear bumper” option.
• 330i M Sport or M340i: these two bumpers also differ (different exhaust cut-outs). Variants marked “M340i” or “330i M Sport” fit only that bumper.
• “Pre-LCI M Sport” / “LCI M Sport” marking: these are made for the G20 M Sport bumper without naming an engine variant – please check with us before ordering whether you have a 330i or M340i bumper (also for 320i/320d M Sport).

Installation

We recommend professional installation; for the DTM and Performance Style, removing the rear bumper is recommended. For the LED versions, have the light wired in by a professional as well. If you have any questions, feel free to contact us!

New styles (price coming soon): BlackShark Style. Their price is being finalised; they can be ordered once it is set – contact us with any questions.