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RSI c6Handcrafted in Italy
Rear Diffuser in Carbon Fiber - BMW 4 Series G22/G23 430i and M440i
$1,509.00Rear Diffuser
4 Series / M440i (G22/G23/G26)
Direct Stage 4 Tuning × RSI c6 partnership
Made to order in Italy
Each part is produced to order by RSI c6 in Italy; typical lead time 4–8 weeks.
The piece
Details & finish.
BMWRear DiffuserRSI c6 · Italy
Enhance your BMW 4 Series G22/G23 with this carbon fiber rear diffuser. Optimized airflow design improves aerodynamic stability while delivering an aggressive, race-inspired look.
Precision-engineered for perfect fitment on 430i and M440i models. Lightweight construction combines visual impact with functional performance.
Each piece is made to order. Finish, weave, and configuration are confirmed before production begins; typical lead time is 4–8 weeks.
Continue the build
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