IAW Carbon BMW 3 Series PRE LCI G2X G8X Dry Carbon Fiber Interior Air Ultimate Aero Enhancement Buy Genuine Carbon Fiber Rear Vents Canards CS Style Carbon Fiber Vented Hood Bonnet for BMW 3 Series G20 G28 FUTURE DESIGN BMW 3 SERIES G20 G21 LCI CARBON FIBRE REAR DIFFUSER. NWCarbon Haus 3 Series G20 G28 NW Style Dry Carbon Fiber Rear Vents. Constructed of pre preg carbon fiber using state of the art technology to ensure perfect fitment and quality every time. Lead time 3 4 weeks.