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RSI c6Handcrafted in Italy
Rear Extractor Diffuser in Carbon Fiber - BMW 4 Series G26 Gran Coupè M440i 430i
$1,743.00Rear 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
Upgrade the rear of your BMW 4 Series G26 Gran Coupé M440i / 430i with our carbon fiber rear diffuser. Designed to enhance aerodynamics and deliver a sharper, more aggressive motorsport-inspired look.
Each piece is made to order. Finish, weave, and configuration are confirmed before production begins; typical lead time is 4–8 weeks.
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