Audi R8 4S Spyder bj2018 tailgate + carbon 4S7827025C

Part Number: 4S7.827.025.C (4S7827025C)

Application: Audi R8 Spyder (Gen 2) V10 / V10 Plus

Model Year: 2016–2019 (Pre-Facelift / Early Facelift)

Material: CFRP (Carbon Fiber Reinforced Polymer) + Aluminum Frame

The 4S7827025C is the ultra-lightweight rear “tailgate” (engine compartment lid) specifically designed for the Spyder variant of the second-generation Audi R8. Unlike the Coupe, which features a glass window to showcase the V10, the Spyder utilizes this vented carbon fiber panel to manage the intense heat of the mid-mounted engine while remaining light enough for the hydraulic roof mechanism to lift during convertible operation.

Technical Specifications

• Core Material: High-gloss Twill Weave Carbon Fiber (Visible Exterior) with a structural composite underside.

• Ventilation: Features the signature “Honeycomb” mesh inserts designed to extract heat from the $5.2\text{L}$ V10.

• Weight: Approximately $6.5\text{ kg}$, significantly lighter than a traditional steel or glass-heavy assembly.

• Hardware Compatibility: Includes mounting points for the rear-view camera, third brake light, and the “V10” or “Audi Rings” emblems.

Key Features & Design

• Thermal Management: The vents are strategically placed to create a chimney effect, pulling hot air away from the cylinder banks even when the vehicle is stationary.

• Aerodynamic Integration: The trailing edge is contoured to work in harmony with the R8’s rear diffuser and active/fixed rear wing, ensuring high-speed stability.

• UV Protection: Factory units feature a high-solids clear coat specifically formulated to resist the “yellowing” or “clouding” that often plagues aftermarket carbon fiber parts exposed to engine heat.

Professional Installation & Maintenance

1. Alignment: The R8 Spyder tailgate is part of the convertible top sequence. After installation, the gaps must be measured with a feeler gauge to ensure the tonneau cover (roof lid) does not strike the tailgate during operation.

2. Heat Shielding: Ensure the gold or silver thermal foil on the underside is intact. If this shielding is missing, the heat from the V10 exhaust manifolds can cause the carbon fiber resin to “gas out,” leading to bubbles in the exterior paint.

3. Third Brake Light Transfer: When swapping the lid, the LED third brake light (4S7 945 097) must be transferred carefully. The plastic clips are brittle; use a non-marring pry tool.

4. Cleaning: Warning: Never use abrasive waxes or mechanical buffers on the carbon weave. Use only high-quality “ph-neutral” soaps and a synthetic sealant to protect the gloss finish.

Inventory Note: The “C” revision of this part number is the high-spec version found on the V10 Plus and Performance models. It is highly sought after as an upgrade for standard V10 Spyders that came with the painted plastic/aluminum lid.