3DDesign Carbon Rear Trunk Spoiler for G26 BMW 4 Series M Sport and i4 M Sport

The 3DDesign Carbon Rear Trunk Spoiler for the G26 BMW 4 Series M Sport and i4 M Sport enhances the elegant silhouette of BMW’s Gran Coupe with a perfect blend of sophistication and performance. Expertly crafted from premium carbon fiber, this spoiler delivers a lightweight yet durable aerodynamic upgrade that improves airflow and adds a dynamic visual edge to the rear profile. Its subtle curvature and precision fitment accentuate the car’s natural lines while maintaining an OEM-quality finish. Designed and manufactured in Japan, the 3DDesign Carbon Rear Trunk Spoiler embodies the brand’s signature balance of refined craftsmanship and motorsport-inspired design.

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 premium, lightweight carbon fiber for strength and durability
• Enhances aerodynamic efficiency and rear-end stability
• Subtle, sculpted design complements the vehicle’s elegant lines
• High-gloss carbon weave finish for a premium, motorsport-inspired look
• Seamless integration with factory mounting points for perfect fitment
• Adds a refined, performance-oriented aesthetic without compromising functionality
• Designed and manufactured in Japan by 3DDesign for superior quality and precision

Applications

• BMW 420i M Sport: G26 | 2021-present
• BMW 430i M Sport: G26 | 2021-present
• BMW i4 M Sport: G26 | 2022-present
• BMW M440i M Sport: G26 | 2021-present

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.