TRE Pre-Preg Carbon Fibre GT Rear Diffuser for BMW F80 M3 & F82 M4

Give your BMW M3 or M4 the aggressive rear-end presence it deserves with the TRE Pre-preg GT Style Carbon Fibre Rear Diffuser. Inspired by motorsport aesthetics and engineered for durability, this diffuser enhances the car’s rear-end aggression. Crafted from premium pre-preg carbon fibre, it combines lightweight construction with outstanding strength and a flawless gloss finish. Whether paired with other carbon upgrades or installed as a standalone feature, this diffuser delivers an ideal balance of style, fitment, and understated performance character.

Key Features

• Pre-preg carbon fibre construction for superior strength-to-weight ratio and durability

• High-gloss UV-resistant lacquer finish to prevent discolouration/fading and industry leading two year warranty

• OEM+ style design with integrated fins for a motorsport-inspired look

• Precision-engineered fitment for direct replacement of the factory diffuser

• Lightweight yet highly rigid structure enhances rear-end visual impact without adding unnecessary weight

• Compatible with factory exhaust systems and most aftermarket setups

Compatibility

• BMW F80 M3 & F82 F83 M3 (2014-2019)

Who Is This Product For?

This Competition Rear Diffuser is ideal for BMW M3 and M4 owners who demand premium quality carbon fibre upgrades with authentic motorsport styling. Perfect for drivers attending shows, track days, or those who simply want to elevate the aesthetics of their car without compromising OEM fit and finish.

If you're curating a carbon exterior package or seeking a single, high-impact rear-end upgrade, the TRE Competition Diffuser is a natural choice.

Why Choose TRE?

TRE (The Racer's Edge) represents the pinnacle of carbon fibre styling for high-performance vehicles, offering premium components designed to elevate both form and function. Each product is crafted from lightweight, high-strength 2x2 twill pre-preg carbon fibre, with a flawless gloss finish and motorsport-inspired design language that complements your car’s factory lines.

TRE products are engineered using advanced CAD design methods to ensure precise, hassle-free fitment, and undergo rigorous aerodynamic testing, including CFD analysis, where applicable. Backed by an industry-leading two-year warranty, TRE stands by the quality, durability, and performance of every product they offer.

Trusted on iconic performance builds by specialists like AUTOID, TRE components are chosen by enthusiasts who value authentic design, flawless fitment, and uncompromising quality.