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Columbus Car Audio on X: "Custom built subwoofer enclosure and amp mounting in the cargo/trunk space of this 2016 Ford Focus RS. So yes, you can have awesome sound without giving up
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Stealth Ford Focus Subwoofer Enclosure
Discontinued Obsolete SKU MTX Audio
Ford Focus Mk3 -Subwoofer Kit | subwoofer, Ford Focus, electronic amplifier | SUBWOOFER KIT! Ford Focus Mk3! Deliveries begin in July! Special Pre-order Price: SUBWOOFER KIT --- 499.00 EUR (Subwoofer box +
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Ford Focus XR5 2004-2011 10inch sub Fibreglass subwoofer box | eBay