BMW F32 Coupe / F33 Convertible 435i / 440i Carbon Fiber Rear Diffuser Quad
The 3DDesign Carbon Fiber Rear Diffuser Quad is engineered specifically for the BMW 4 Series F32 Coupe and F33 Convertible 435i / 440i models with M-Sport rear bumpers, delivering an OEM-quality fitment and an aggressive lower rear aesthetic designed to accommodate quad exhaust tip setups.
Manufactured by 3DDesign Japan, this rear diffuser is constructed entirely from Carbon Fiber Reinforced Polymer (CFRP), offering exceptional structural strength, ultra-lightweight performance, and a high-gloss clear coat finish. Designed for seamless integration, it attaches directly to the M-Sport rear bumper without requiring complex body modifications.
Installation is straightforward using original mounting locations and supplied instructions.
Kit Includes:
- 3DDesign Carbon Fiber (CFRP) Rear Diffuser (Quad 435i Setup)
- Official installation guide
Specification Details Material | Carbon Fiber Reinforced Polymer (CFRP) Construction
Finish | High Gloss Clear Coat
Fitment | BMW 4 Series F32 Coupe & F33 Convertible 435i / 440i (M-Sport Rear Bumper)
Exhaust Outlet Setup | Quad Exhaust Tailpipes (2 Outlets Left, 2 Outlets Right / 4-Tip)
Part No. | 3108-23221
Product Code | 3108-23221
Weight | Ultra-Lightweight CFRP Construction
Installation | Direct Attachment to M-Sport Rear Bumper
Manufactured by | 3DDesign Japan
Distributed by | Racebox
