Product Overview

Upgrade the rear-end styling and aerodynamic performance of your 2024–Present Ford Mustang S650 EcoBoost or GT with this Factory GT Style Dry Pre-Preg Double-Sided Carbon Fiber Rear Bumper Lower Diffuser. Designed for models equipped with dual exhaust tips, this diffuser brings a sleek, aggressive, and factory-inspired finish that perfectly complements the latest Mustang’s modern design language.

Engineered from high-strength dry pre-preg double-sided carbon fiber, this diffuser combines superior durability with ultra-lightweight performance. The autoclave-cured construction ensures maximum rigidity and precision, making it far stronger and lighter than traditional wet carbon fiber or fiberglass alternatives.

The UV-resistant high-gloss clear coat protects against sun damage, oxidation, and yellowing, maintaining a deep carbon weave luster for years to come. Every contour is crafted to perfectly match the rear bumper of the S650 Mustang EcoBoost and GT, delivering an OEM-level fit with a track-inspired aesthetic that transforms your vehicle’s stance and road presence.

Whether you’re aiming for enhanced performance or simply a sharper, more refined rear profile, this carbon fiber diffuser provides the ultimate finishing touch for your Mustang.

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Key Features

• Perfect Fit for 2024–Present Ford Mustang S650 EcoBoost & GT Models: Custom designed for models equipped with dual exhaust tips, ensuring precise alignment with OEM rear bumpers.

• Factory GT Style Design: Styled after the original GT package, delivering a clean, performance-inspired appearance that blends seamlessly with the factory body lines.

• Dry Pre-Preg Double-Sided Carbon Fiber Construction: Crafted using aerospace-grade materials for maximum strength, lightweight efficiency, and long-term durability.

• Lightweight & Performance-Oriented: Minimizes rear-end weight to maintain balance and handling dynamics while offering improved aerodynamics.

• UV-Protected Gloss Finish: High-gloss coating protects against UV rays, fading, and surface oxidation while preserving the deep 3K twill weave pattern.

• Direct Bolt-On & Clip-On Fitment: Easily installs to factory mounting points — no drilling or modification required.

• Re-Use OEM Hardware: Installation uses existing factory bolts and clips for a secure, factory-quality fit.

• Enhanced Rear Aerodynamics: Fin design improves underbody airflow and stability during high-speed driving.

• Aggressive Aesthetic Upgrade: Adds a sportier, race-inspired look that enhances the vehicle’s overall visual impact.

• Precision Fit & Finish: Engineered to exact OEM tolerances for seamless installation and a flawless carbon fiber appearance.

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Installation

• Installation manual not included.

• Direct bolt-on and clip-on installation — no drilling, trimming, or modification required.

• Reuse factory OEM hardware for secure mounting.

• Ensure all contact surfaces are clean and properly aligned before installation.

• Professional installation recommended for optimal fitment and finish.

   

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Vehicle Compatibility

Fits models equipped with dual exhaust tips only. Not compatible with Dark Horse or quad-tip exhaust configurations.

About Dry Carbon

Dry Carbon Fiber vs Wet Carbon Fiber — What’s the Difference?

Not all carbon fiber parts are made the same. The biggest distinction comes down to how the carbon is processed — commonly known as dry carbon and wet carbon. Both use genuine carbon fiber weave, but the production method, finish, and performance are completely different.

Manufacturing Process                                  

Dry carbon fiber parts are produced using a pre-preg (pre-impregnated) carbon cloth, where the exact amount of resin is pre-applied by the manufacturer. These sheets are then vacuum-sealed and cured under high pressure and temperature in an autoclave, removing excess air and resin.
The result is a light, extremely strong, and precisely formed component — the same process used in motorsport and aerospace applications.

Wet carbon fiber, on the other hand, uses a hand-lay or wet-lay method. The carbon cloth is laid into a mold and liquid resin is manually brushed or poured over it before curing. Because it’s not vacuum-bagged or autoclave-cured, there’s usually more trapped resin and air pockets, leading to a heavier part and a less uniform finish.

Weight & Strength

Dry carbon fiber is roughly 30–50% lighter than wet carbon. This is due to the controlled resin ratio — just enough to bind the fibers without unnecessary weight.
By comparison, wet carbon or carbon-over-fiberglass parts can be up to 70% heavier, since excess resin and fiberglass layers add mass without increasing stiffness.
For reference:

• Carbon Fiber Density: ~1.55 g/cm³
• Fiberglass Density: ~2.6 g/cm³

Dry carbon also offers a much higher modulus of elasticity (~125 GPa), giving it outstanding rigidity under stress — ideal for aerodynamic and high-load components.

Visual & Structural Differences

• Backside: A true dry carbon piece will look identical front and back — you can see the same woven pattern throughout.
  Wet carbon or fiberglass-backed parts often have a dull, uneven underside with visible fiberglass texture or color variation.
• Edges: Solid dry carbon has clean, uniform black edges.
  Wet carbon or overlay parts may show a white or grey line along the edge, revealing the fiberglass underneath — sometimes hidden with black paint trim.
• Finish: Dry carbon typically has a consistent matte or satin finish, while wet carbon can appear glossy but uneven due to hand-applied resin.