Carbon Fiber Doors Full Set – Audi B8.5 S4 (2013–2016)

Replace heavy OEM steel doors with precision-molded carbon fiber door shells engineered specifically for the Audi B8.5 S4. Designed for builders chasing weight reduction without sacrificing OEM-grade fitment, these doors are ideal for track builds, show cars, and high-end performance applications.

Each door is manufactured using a multi-piece mold to preserve factory body lines, window frames, and panel gaps, delivering an OEM-plus appearance with motorsport benefits.

Construction & Materials

Pre-preg or vacuum-infused carbon fiber (option dependent)

3×3 twill carbon weave (optional by request)

Reinforced mounting points and stress zones

UV-stable automotive clear coat

Precision-trimmed edges for clean fitment

Weight Reduction

Up to 50–60% lighter than OEM steel doors (approx. savings vary by configuration)

Significantly lowers overall vehicle mass and may improve side-to-side balance

Fitment Details

Designed to align with OEM/4RS Components 

Compatible with factory hinges and latch locations

Intended for use with custom or stripped interiors

Glass, regulators, side-impact beams, and wiring are not included

⚠️ Important: These doors are motorsport-oriented components. Side-impact protection and factory crash structures are not retained. Not DOT-certified for street use unless modified by the installer.