For those of you who want more bass but don't want to sacrifice your spare tire or hatch space, I highly recommend this spare tire mount subwoofer : r/GolfGTI
Amazon.com: American Sound Connection Universal Fit Single 10" Subwoofer Sealed Replacement Spare Tire Custom Sub Box : Electronics
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Buy Spare Tire Well Speaker Box Sub Subwoofer Enclosure 10" 0.5 cuft of Airspace Online at desertcartIndonesia
Stealth Ford Focus Subwoofer Enclosure
Spare Tire Sub Box for Ultimo SC + Toolbox Amprack
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Custom Subwoofer Box | Toyota GR86 Forum - GT86 Forum, Subaru BRZ Forum, Scion ...