3DDesign Carbon Trunk Spoiler for G23 BMW 4 Series

The 3DDesign Carbon Trunk Spoiler for G23 BMW 4 Series adds a perfect blend of sophistication and performance to the convertible’s elegant design. Crafted from lightweight, high-strength dry carbon fiber, this trunk spoiler enhances rear-end aerodynamics while giving the vehicle a more dynamic, sporty profile. Designed and manufactured in Japan, 3DDesign’s signature precision ensures seamless integration with the factory body lines for an OEM-level fit and finish. The result is a refined, motorsport-inspired upgrade that elevates both the visual appeal and aerodynamic balance of the G23 4 Series.

Gtechniq EXOv5 Coating

• This optional coating forms a durable, long-lasting bond that will not wash off or break down, providing reliable, extended protection for paintwork and other treated surfaces. It creates a strong protective barrier that helps shield against damaging environmental contaminants such as dirt, road grime, and pollutants, while also offering enhanced scratch resistance to maintain a clean, high-gloss finish over time. For those seeking maximum durability and performance, the coating can be applied in multiple layers to increase thickness, strengthen protection, and further extend the life of the surface.

Features

• Constructed from lightweight, high-strength dry carbon fiber (CFRP)
• Enhances rear-end aerodynamics and stability at higher speeds
• Adds a refined, motorsport-inspired aesthetic to the vehicle’s profile
• Seamlessly integrates with factory body lines for OEM-quality fitment
• Finished in a UV-resistant high-gloss clear coat for lasting protection and shine
• Precision-engineered and manufactured in Japan by 3DDesign
• Lightweight design maintains performance without adding unnecessary mass
• Complements other 3DDesign aerodynamic components for a cohesive look
• Optional Pre-applied Gtechniq EXOv5 Coating

Applications

• BMW 430i: G23 (2021-present)
• BMW M440i: G23 (2021-present)
• BMW M4: G83 (2021-present)

Notes

• Spoiler attaches to the rear trunk on all G83 M4 and G23 4 Series convertible models

About 3DDesign

3DDesign is a Japan-based BMW specialist recognized for OEM-level fit, refined aesthetics, and real-world performance. Drawing on motorsport development, the brand engineers aerodynamic components, wheels, exhaust systems, suspension, and interior accessories using advanced CAD / CAM, CFD, and road / track testing. Its catalog emphasizes lightweight, high-quality materials — such as carbon fiber, forged aluminum, and titanium — paired with precise tolerances for seamless integration with factory systems. The result is a cohesive, OEM-plus driving experience that elevates both form and function across modern BMW platforms.