BMW 4-Series (F32/F33/F36) Performance Rear Diffuser (Dual Exit)

Give your BMW 4 Series the ultimate powerhouse aesthetic with our M-Performance Style Dual-Exit Rear Diffuser. This is the definitive upgrade for owners looking to achieve the iconic "split-pipe" look found on high-performance BMW models.

Whether you are running a 435i/440i or have performed a dual-exit exhaust conversion on your 420i/420d, this diffuser provides the aggressive, symmetrical framing your rear end needs.

Symmetrical Aggression

This diffuser is designed to wrap around dual-exit exhaust tips, creating a wider and more planted appearance. You can choose between two premium finishes to match your build:

• Deep Gloss Black: For a stealthy, high-end "blacked-out" look that blends perfectly with shadow-line trim.

• Carbon Fiber Look: Featuring a high-definition hydro-dipped weave that gives your BMW a track-inspired, exotic finish.

Product Features

• True Symmetrical Design: Features perfectly aligned cutouts for a dual-exit exhaust setup (one outlet on the left, one on the right).

• Enhanced Aero Fins: Designed with four pronounced vertical strakes that add depth and a motorsport-inspired "venturi" effect to the rear bumper.

• Heat-Shielded ABS: Constructed from premium ABS plastic that is naturally resistant to high exhaust temperatures and impact from road debris.

• Precision Clip-In Fit: Engineered to be a direct replacement for your factory M-Sport rear insert using existing mounting points.

Technical Specifications

Installation Note

This diffuser is a "pop-out, pop-in" replacement for the factory M-Sport trim. For the most secure fit, we recommend reusing the OEM bolts on the underside and ensuring all plastic tabs are fully clicked into place.