JL Audio SBXJJTGLAD10TW1

Stealthbox Enclosed Subwoofer for Chevrolet Silverado and GMC Sierra Crew Cab Combining our advanced thin-line subwoofer technology with a form-fitting enclosure design, this Stealthbox subwoofer system houses two powerful 12-inch TW3 thin-line subwoofers to deliver outstanding sub-bass performance without compromising passenger comfort. The rugged, custom-molded sealed enclosure is designed to fit neatly under the rear seat. We even left space on the enclosure thats perfect for a clean, hidd...