BMW M3 M4 G80 G81 G82 G83 CPG Fender DRY Carbon

For the BMW M3 (G80/G81) and M4 (G82/G83), “CPG” typically refers to Carbon Performance Group (or similar high-end boutique manufacturers). Their Dry Carbon Fiber Fenders are a radical aerodynamic and aesthetic departure from the factory steel or aluminum panels.

Unlike simple carbon “vent trims” that clip into the stock fender, a Dry Carbon Fender set replaces the entire quarter panel with a motorsport-derived, vented unit.

1. Technical Specifications: “Dry” vs. “Wet” Carbon

Because these are “Dry” carbon (Pre-preg), they are manufactured in an autoclave under high pressure.

• Weight Reduction: Saves approximately 3kg – 5kg (6-11 lbs) per side compared to the OEM metal fenders.

• Structural Rigidity: Dry carbon is significantly stiffer than the “Wet” carbon fiber often found on cheaper eBay parts, ensuring the panels don’t vibrate or warp at high track speeds.

• Finish: Usually available in a 2×2 Twill Weave to match the OEM M-Performance roof and mirror caps.

2. Design Features: The “Vented” Look

The CPG-style fenders for the G8x platform are heavily inspired by the BMW M4 GT3 race car. They typically include:

• Integrated Louvers: Functional vents at the top or rear of the wheel arch designed to extract high-pressure air from the wheel well, reducing front-end lift.

• Aggressive Side Breathers: The vertical “M” vent is usually enlarged or integrated more seamlessly into the carbon mold.

• Direct Fitment: These are designed as “bolt-on” replacements using factory mounting points, though professional alignment is essential for perfect panel gaps.

3. Compatibility Table

4. Installation & Painting Insights

When buying these as a “Complete Set” in New Original Packaging, keep the following in mind:

• The “Partial Paint” Trend: Most owners choose to paint the fenders to match the body color (e.g., Isle of Man Green or Brooklyn Grey) but leave the carbon fiber exposed on the inner louvers or the vent areas.

• Indicator Transfer: You must transfer your original LED side indicators and “M3/M4” badges to the new panels.

• Wheel Clearance: These fenders typically maintain the OEM width, but because the inner lining is sometimes modified for the vents, ensure your tire setup doesn’t rub on the new carbon edges under full compression.

• Pro Tip: Because Dry Carbon is thinner than metal, you must use a high-quality UV-protectant clear coat. If the fenders arrive in a “Raw” or “Matte” finish, consult a body shop about a ceramic-infused clear coat to prevent the carbon from “yellowing” over time due to engine bay heat.