3DDesign Carbon Rear Diffuser for G29 BMW Z4 20i M Sport (with quad exhaust tips)

Unleash the full visual potential of your roadster with the 3DDesign Quad Tip Carbon Rear Diffuser for G29 BMW Z4 20i M Sport. Expertly crafted from premium pre-preg carbon fiber, this diffuser delivers a bold, motorsport-inspired look while maintaining perfect OEM fitment. Its aggressive contours and quad-tip design accentuate the Z4’s dynamic proportions, enhancing both aerodynamics and rear-end presence. Designed to integrate seamlessly with either the 3DDesign quad exhaust system or the factory M40i setup, it embodies Japanese precision engineering and refined performance aesthetics — making it the ultimate statement piece for discerning BMW enthusiasts.

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 pre-preg carbon fiber
• Accommodates a quad-tip exhaust setup for a bold, performance-oriented look
• Precision fitment that integrates seamlessly with the factory rear bumper
• Aggressive styling that enhances aerodynamics and rear-end presence
• Includes all necessary installation hardware for easy mounting
• Finished in a sleek, UV-protected carbon weave for long-lasting durability
• Engineered by 3DDesign in Japan for exceptional quality and craftsmanship

Applications

• BMW Z4 20i: G29 (2019-present)

Notes

• Only compatible with vehicles with M Sport packages

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.