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Your cart is empty.Compatible with: Ford F-150 Crew Cab/Ext Cab 2004-2008 (4 door models) Vehicle specific ThunderForm enclosures are designed to utilize space in vehicles that would otherwise go unused to add a subwoofer enclosure. These enclosures are highly durable and provide a custom fit so that you do not have to sacrifice cargo space for added aftermarket performance. This model includes an integrated amplifier and single 12" Terminator series subwoofer for an unbeatable listening experience with a stealthy factory look. Stock Fit And Look All Thunderform models are manufactured using either a highly technical HDPE resin rotational molding or hand laid fiberglass process to create lightweight, durable enclosures, often matching your interior and available in two formats: amplified or loaded. (Try getting a built-in amp from anyone else!) Get Thunderforms How You Need Them Most Thunderform models come in two versions: Amplified models include an integrated high efficiency amplifier and custom subwoofer that deliver an exceptional performance. Loaded models include a custom 4Ω subwoofer that can be used with existing amplifiers or with upgraded amplifiers.
