BMW G80/G82, M3/M4 Carbon Fibre 3 Piece MP Style Rear Diffuser

BMW G80/G82 M3/M4 Carbon Fibre 3 Piece MP Style Rear Diffuser

Replace the plain lower rear valance on your G80 M3 or G82 M4 with this MP Style Rear Diffuser, a three-piece carbon fibre kit made up of a full-width centre diffuser and a pair of outer corner extensions.

The MP profile is the deep, multi-strake shape that reads clearly from directly behind the car. The centre section carries vertical fins across the full width of the valance, while the two corner pieces wrap around the outer edges of the bumper and carry the line out toward the arches — the detail most single-piece diffusers leave untouched.

All three pieces are carbon fibre with a high-gloss twill weave under a UV-protected clear coat, moulded to the contour of the factory G8X rear bumper and fitted at the existing lower valance locations.

Because the corners are covered as well as the centre, the rear of the car reads wider and lower than it does with a centre diffuser alone.

Key Features

Three Piece Kit

A full-width centre diffuser plus two outer corner extensions, so the whole lower rear is covered rather than just the middle.

MP Style Multi-Strake Profile

Vertical fins across the centre section, the deep motorsport-derived shape that gives the rear its definition from directly behind.

Wrapped Outer Corners

The two corner pieces carry the diffuser line out toward the arches, widening the rear rather than stopping at the exhaust.

Carbon Fibre Construction

Carbon fibre with a consistent twill weave under a high-gloss clear coat, matched to the look of the rest of the G8X carbon range.

UV Protected Finish

A high-gloss coating that resists yellowing and holds its depth under Australian sun.

Factory Mounting Points

Moulded to the contour of the standard G8X rear bumper and fitted at the existing lower valance locations.

Styling Benefits

• A wider, lower rear than a centre diffuser alone gives
• Full coverage of the lower rear bumper, corners included
• Frames the quad exhaust outlets
• Carbon weave that matches the rest of the G8X range
• Pairs with a carbon boot spoiler for a complete rear treatment

Vehicle Fitment

BMW G80 M3 (2021+)
BMW G82 M4 (2021+)

Please Note

Professional installation is strongly recommended. The three pieces need to be aligned to each other and to the bumper before any fixing is made permanent.

The boot spoiler shown in the fitted photograph is not included. This listing is for the three-piece rear diffuser kit only.

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

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.