MHC+ BMW F80 M3 & F82/F83 M4 GTX Rear Diffuser In Pre Preg Carbon Fibre

Upgrade the rear styling of your BMW with the MHC+ GTX Rear Diffuser for the F80 M3 & F82/F83 M4, a premium carbon fibre aero upgrade engineered to deliver aggressive motorsport-inspired styling with OEM-level fitment and finish. The diffuser integrates seamlessly with the factory rear bumper while adding greater depth, sharper fin detailing and a more technical rear-end appearance.

Manufactured from 100% pre-preg (“dry”) carbon fibre, it combines lightweight construction, exceptional rigidity and a flawless high-gloss finish – and it is the easiest component in the GTX range to fit, going on in around 15 minutes using solely the OEM mounting points.

Key Features

• Designed for the BMW F80 M3 & F82/F83 M4
• Premium GTX rear diffuser design
• Manufactured from 100% pre-preg (“dry”) carbon fibre
• OEM-style 2x2 twill carbon weave
• Deep high-gloss UV-resistant lacquer finish
• Developed using full 3D chassis scanning and CAD engineering
• Fits using solely OEM mounts – no drilling, no adhesive
• Direct replacement for the factory diffuser
• Modular design – undertray add-on can be fitted at any time
• 15-minute fit
• Backed by MHC LDN’s 3-year warranty

GTX Rear Aero Styling

The diffuser forms the main visual centrepiece of the rear, featuring:

• Aggressive fin detailing
• A deeper and more sculpted diffuser profile
• Enhanced rear-end definition
• A clean centre-section design inspired by motorsport aero concepts

Build It Your Way – Modular Add-Ons

This listing is for the GTX rear diffuser itself – a straight swap for the OEM item and a complete product on its own.

For the full GTX rear aero appearance, the MHC+ BMW F80 M3 & F82/F83 M4 GTX Ultra Aggressive Undertray Add On extends the diffuser further beneath the vehicle. You can:

• Buy both together as part of the complete MHC+ GTX Aero Kit
• Or add the MHC+ BMW F80 M3 & F82/F83 M4 GTX Ultra Aggressive Undertray Add On later as a modular upgrade – the two sections bolt together with the supplied M6 hardware, so nothing needs modifying

Fitment & Installation

Fits using: solely the OEM mounting points – the diffuser clips into place and reuses the factory self-tapping screws. No drilling and no adhesive required

Tools required – items marked (supplied) are included in the box:

• PZ2 driver bit (supplied)
• Trim removal tools
• Panel wipe or IPA and lint-free cloths (alcohol wipes supplied)

Time to fit: 15 minutes
Difficulty: Easy – no drilling required

Remove the old diffuser, clip the GTX diffuser into place with a firm push along its full length to engage every clip, then refit the OEM self-tappers on the underside.

All required fixings and consumables are supplied. Best fitted indoors, above 15°C, on a clean, dry car – trial fit before committing any adhesive tape. A full step-by-step GTX fitting guide is available, and professional installation is recommended for the best possible result.

Precision OEM-Level Fitment

MHC+ developed this component using:

• Full 3D scans of the BMW F8X chassis
• Advanced CAD modelling and engineering
• OEM-level panel alignment development

This ensures flush integration with the factory body lines, accurate panel alignment and OEM-style fitment quality. No cutting or compromise required.

Premium Pre-Preg Carbon Fibre Construction

Unlike conventional wet carbon fibre products, MHC+ uses genuine pre-preg (“dry”) carbon fibre, delivering:

• Increased strength and rigidity
• Reduced overall weight
• Superior weave consistency
• Minimal imperfections or air pockets
• Exceptional long-term durability

Each component is cured under controlled heat and pressure to achieve optimal resin saturation, producing a premium carbon fibre part suitable for high-end BMW builds.

Deep High-Gloss Finish

Finished in a premium UV-stable gloss lacquer, every GTX component offers:

• Excellent resistance to fading and yellowing
• A rich OEM-style appearance
• Seamless compatibility with other MHC+ carbon fibre components

Supplied Ready to Install

• PZ2 driver bit
• Alcohol wipes for surface preparation
• Reuses your OEM fixings throughout – keep every one you remove
• MHC LDN fitment guarantee

Compatibility

• BMW F80 M3
• BMW F80 M3 Competition
• BMW F82 M4
• BMW F82 M4 Competition
• BMW F83 M4 Convertible
• BMW F83 M4 Competition

Why Choose MHC+?

MHC+ is recognised globally for producing premium BMW carbon fibre styling upgrades with precise fitment, OEM-inspired design and exceptional manufacturing quality.

Upgrade your BMW with the MHC+ GTX Rear Diffuser, delivering aggressive GTX styling, premium pre-preg carbon fibre construction and OEM-quality fitment for the F8X M platform.