BMW 3 Series G20 / G21 M Sport Rear Valance (Diffuser) — Facelift 2022+ Gloss Black

Give your 3 Series a lower, wider rear end. This rear valance (often called a rear diffuser) is shaped for the facelift (LCI) M Sport rear bumper of the BMW 3 Series G20 Saloon and G21 Touring (2022+), adding a diffuser-style lower profile with vertical fins. Moulded from UV-stable ABS in a deep gloss black finish, it follows the bumper's original contour for a clean, factory-look fit.

Fits

• BMW 3 Series G20 Saloon — M Sport (M-Pack) Facelift (2022+)
• BMW 3 Series G21 Touring — M Sport (M-Pack) Facelift (2022+)

Not compatible with

• G20 / G21 pre-facelift (2019–2022)
• Standard / Sport Line (non M Sport) rear bumper
• BMW M3 G80 / G81

⚠ Compatibility note: Shaped for the facelift M Sport rear bumper. Please compare your rear bumper with the listing photos before ordering.

What's in the box

• 1× Rear Valance — Gloss Black ABS
• Stainless steel screw mounting kit
• Fitting manual

Key features

• Diffuser-style look — lower, wider rear profile with vertical fins
• Fits Saloon and Touring — the facelift rear bumper is shared
• Screw-fit — mounting holes are drilled into the bumper at the marked points; kit and manual included
• UV-stable ABS — resists fading, warping and road debris
• Paintable — can be colour-matched by any body shop

Installation

The valance mounts to the lower edge of the rear bumper using the supplied screw kit. Mounting holes are drilled into the bumper at the marked points — no cutting or trimming of the bumper shape is needed.

1. Dry-fit the valance and check alignment along the full bumper edge.
2. Mark the mounting points using the valance as a guide.
3. Drill the marked points and secure with the supplied screws, working from the centre outwards.

Basic hand tools and a drill are needed (approx. 45–60 min). Professional installation is recommended if unsure.

FAQ

Does it fit the pre-facelift G20 (2019–2022)?
No. The 2022 facelift has a new rear bumper; this valance is for facelift cars only.

Does it fit the Touring (G21)?
Yes. The facelift M Sport rear bumper is shared by the Saloon and Touring.

Does it need the M Sport package?
Yes. It is shaped for the M Sport (M-Pack) rear bumper; standard and Sport Line bumpers are different.

Is drilling required?
Yes. The valance is screw-fitted: holes are drilled into the bumper at the marked points using the supplied kit.

Is it road legal in the UK?
Yes, when securely fitted and not obstructing lights or the number plate. Tell your insurer about any modification.

Complete the look

Pair it with the AeroFinityWorks BMW 3 Series G20 / G21 front splitter for a complete styling package.