BMW Z3 M Roadster 8" subwoofer enclosure with Kicker 10C84 - YouTube
Genuine BMW - 65138386456 - Subwoofer (65-13-8-386-456)
Factory Auto Sound / FAS Group - Custom subwoofer enclosure for a BMW Z3 Roadster. 8" Hertz Energy woofer. 6.5" Hertz Energy components and a 5 Channel Hertz amplifier as the power