NVX - 2008-2013 Silverado/Sierra Extended Cab - Custom-Fit Loaded Dual 10" Sealed Subwoofer Enclosure - Black

Designed for your Silverado/Sierra Extended Cab truck, this vehicle-specific loaded subwoofer box installs beneath the rear seat for an OEM-style appearance. Constructed from high-strength 3/4" MDF with a durable carpeted finish, this sealed subwoofer enclosure is loaded with two NVX SMW10D4 10" subwoofers for deep, clear, and accurate bass.

Designed for your Silverado/Sierra Extended Cab truck, this vehicle-specific loaded subwoofer box installs beneath the rear seat for an OEM-style appearance. Constructed from high-strength 3/4" MDF with a durable carpeted finish, this sealed subwoofer enclosure is loaded with one NVX SMW10D4 10" subwoofer for deep, clear, and accurate bass.

Upgrade your truck’s sound system with the QPower GMC12-2007-HT 2-Hole 12" Underseat Subwoofer Enclosure, engineered to deliver powerful, accurate bass without sacrificing interior space. Compatible with 2007, 2008, 2009, 2010, 2011, 2012, and 2013 Chevy Silverado XCab and GMC Sierra XCab trucks, this enclosure is precision-built to fit vehicles with a high transmission hump under the seat, ensuring a seamless, factory-style installation. Not compatible with Crew Cab models.This downfire enclosure houses two 12-inch subwoofers, directing bass toward the floor for tighter, more controlled low-frequency response. With 0.80 cubic feet of internal air space per subwoofer and a 5.5-inch mounting depth, it provides an acoustic environment for deep, impactful bass that enhances every drive—whether you’re cruising the highway or working the jobsite.Finished in a rugged bed liner coating, the sub enclosure is made to handle daily wear, temperature changes, and the demands of truck life while maintaining a clean, professional appearance. Its compact underseat design keeps your cabin open and functional, preserving legroom and storage while significantly upgrading your audio performance.Perfect for custom and high-performance truck audio systems, the speaker box combines durability, precise fitment, and optimized low-frequency output. If you want richer sound, strong bass response, and a clean install tailored to your X-Cab truck, this QPower GMC12-2007-HT enclosure delivers performance you can hear and reliability you can trust.