Chevy Silverado Extended Cab Subwoofer Boxes - SubThump

Subthump offers a complete line of custom-fit enclosures for Chevy Silverado and GMC Sierra pickup trucks and More.  If you have a Full-Size Extended and Double Cab Pickup, we have the right sub box for you.  Our subwoofer boxes are some of the best in the industry and our customers agree.  No other company can match our style, quality, and service...