Are you looking for the ultimate GMC Custom Subwoofer enclosure? Not only does this enclosure look amazing, but it's also designed to deliver the best sound quality, output, and low-end extension that you won't find in other GMC enclosures. Hand-Crafted Enclosure Details:  - Pre-loaded with four 8-inch Kicker L7S Series Subwoofers, pre-wired - Premium Materials (Premium MDF, High-Grade Carpet, and OEM match vinyl) - Does not require any seat lifts or modifications to the rear seat - Hand-made by our Award Winning Team - Different Emblem Options such as Denali, High Country, etc - RGB Multi-Color Lighting Standard (Controlled via your mobile phone)The Loaded Subwoofer Rack "Ingredients":Electronics: - Kicker CXA1800 1800wrms Mono-Block Amplifier - Kicker Subwoofer Remote Level ControlCustom Made In-House Components: - Ten87 Design Custom Made Amplifier Rack - Bose Plug and Play T-Harness - Full-length Power + Ground 4ga OFC Copper Wiring Kit - Subwoofer harness with quick disconnect connectors Additional Touches: - Pre-tuned and Tested In-House by the Sounds Good Stereo Team - Over-packaged to ensure safe arrival - Includes Free Shipping in the U.S.