BMW F90, M5 Carbon Fibre 3D Style Rear Diffuser

BMW F90 M5 Carbon Fibre 3D Style Rear Diffuser

Rebuild the entire lower rear of your BMW F90 M5 with this 3D Style Rear Diffuser — a multi-piece carbon fibre set with a deep strake centre section and separate corner splitters that wrap up into the bumper.

The factory M5 rear is broad and comparatively flat below the exhaust tips. It is the one area where a car that goes like this still looks like a 5 Series. The 3D Style set answers that with genuine three-dimensional shape: five deep vertical strakes across the centre, and two tall corner pieces that turn the outer edges of the bumper into part of the design.

Because the corners are separate pieces, the set adds width as well as depth — a one-piece diffuser can only work in the middle of the bumper, where this one works right out to the arches.

Every piece is moulded in carbon fibre with a gloss clear coat, formed to the exact contour of the F90 bumper so the fixings land on existing points and the strakes align with the exhaust exits.

Key Features

Genuine Carbon Fibre

Real carbon construction with a deep gloss clear coat, lighter and stiffer than the moulded valance it covers.

Multi-Piece 3D Design

A deep strake centre section plus two separate corner splitters, so the set adds width as well as depth.

Five Deep Strakes

Pronounced vertical fins that throw real shadow, rather than the shallow ribs of a bolt-on panel.

Corner Splitters Included

Tall outer pieces that carry the design up into the bumper corners.

Moulded to the Factory Bumper

Follows the original contour so panel gaps stay tight and the strakes align with the exhaust exits.

Pairs With the F90 Range

Designed to sit alongside our F90 front lips and side skirts for a consistent treatment front to back.

Styling Benefits

• The most three-dimensional rear treatment in our F90 range
• Adds width at the bumper corners, not just depth in the centre
• Genuine carbon weave that matches other carbon parts
• No cutting or permanent modification
• Fully reversible at resale or end of lease

Vehicle Fitment

BMW F90 M5 (2018–2023)
BMW F90 M5 Competition (2018–2023)

Please Note

Please select your exact model above so we can confirm the correct part before dispatch.

Professional installation is required. This is a multi-piece set and the corner splitters must be aligned to the centre section before any fixing is tightened, or the joins will not sit flush.

Carbon fibre is a natural woven material. Minor variation in weave pattern between pieces is characteristic of the material and not a defect.

Made to order. Please contact us to confirm current lead time before ordering.

Why Choose Proven Performance Parts

We specialise in high-performance parts for European vehicles — including Volkswagen GTI & R models, Audi S/RS platforms, and BMW M vehicles. Every product we offer is carefully selected for its quality, fitment, and real-world performance — tested by enthusiasts, for enthusiasts.