3D Design G29 Z4 M40i Carbon Rear Diffuser

The 3D Design G29 Z4 M40i Rear Diffuser enhances the rear fascia of BMW's G29 Z4 roadster with a purpose-built quad-outlet diffuser profile engineered around the M40i's performance exhaust configuration. The design frames the dual exit tips with structured diffuser elements that add visual depth and a motorsport-inspired presence to the Z4's rear end, complementing the roadster's dynamic character.

The 1x1 pre-preg carbon fiber construction delivers a gloss clearcoat finish that highlights the weave beneath, with OEM-level surface texture and consistent factory-style fitment.

Designed and manufactured in Japan, 3D Design components are developed with a focus on fitment precision, durability, and real-world usability. Their approach blends motorsport influence with street functionality, resulting in aerodynamic upgrades that enhance both form and function without sacrificing practicality.

Product Details

• Constructed from 1x1 pre-preg carbon fiber
• Designed for the BMW G29 Z4 M40i
• Rear Diffuser installs directly onto the G29 Z4 M40i rear bumper
• Compatible with 3D Design 4-tip exhaust or factory M40i OEM exhaust
• Includes installation hardware and instructions
• Designed and manufactured in Japan
• SKU: 3108-32911

Vehicle Applications

• BMW G29 Z4

Notes

• Designed specifically for the G29 Z4 M40i — compatible with 3D Design 4-tip exhaust or the factory M40i exhaust; not compatible with non-M40i Z4 variants
• 3D Design is a Japanese manufacturer known for precision-engineered BMW components developed for both street and circuit use
• As the exclusive North American distributor, IND Distribution guarantees all products are genuine 3D Design Japan components