HAW OEM Style Dry Carbon Fiber Rear Diffuser Trim for BMW M3 G80 / G81 M4 G82 / G83

Prepreg Dry Carbon Construction

Every HAW carbon fibre product is manufactured using a prepreg dry carbon process. The carbon fibre fabric is autoclave-cured under high temperature and pressure, with resin content precisely controlled between 37% and 42%. This ensures each piece achieves exceptional structural rigidity while remaining significantly lighter than wet carbon alternatives.

We use Toray standard-grade 3K twill-weave carbon fibre tow to produce our fabric. 3K means each carbon bundle contains approximately 3,000 individual filaments. The twill weave creates the classic diagonal texture — one that shifts subtly under changing light, understated yet impossible to ignore.

HAW OEM Style Dry Carbon Fiber Rear Diffuser Trim – BMW M3 G80 G81 / M4 G82 G83

Complete the rear end of your BMW M3 or M4 with the HAW OEM Style dry carbon fiber rear diffuser trim. Faithfully replicating the factory rear diffuser trim profile, this piece replaces the stock plastic unit with a precision-crafted prepreg dry carbon alternative that delivers a seamless, factory-integrated carbon finish — a refined yet unmistakable upgrade for the discerning M-series owner.

Key Features

• Dry Carbon Fiber Construction – Autoclave-cured prepreg carbon, lighter and stiffer than wet carbon alternatives, finished in a premium 3K twill weave
• OEM Style Design – Faithfully replicates the factory rear diffuser trim profile for a clean, factory-integrated look with a carbon upgrade
• Aerodynamic Benefit – Improves rear airflow management for a cleaner, more planted look at speed
• Direct OEM Replacement – Bolt-on fitment with no cutting or modification required; uses factory mounting points
• UV-Resistant Clear Coat – Protects the carbon weave from yellowing and fading over time
• Significant Weight Reduction – Lighter than the factory plastic rear diffuser trim

Available Finishes

• Gloss Dry Carbon – High-gloss clear coat for a deep, reflective finish
• Matte Dry Carbon – Satin clear coat for a subtle, stealth look

Fitment

• BMW M3 Sedan (G80)
• BMW M3 Touring (G81)
• BMW M4 Coupe (G82)
• BMW M4 Convertible (G83)

What's Included

• 1x HAW OEM Style dry carbon fiber rear diffuser trim
• Fitting hardware

Professional installation recommended. Please verify fitment with your chassis code before ordering.

Note: This is a pre-order item. Estimated arrival approximately 2 weeks from order.