2007-2013 Chevrolet Silverado Extended Cab Single Sub Box Xtreme Enclosures $168.75 Fits 2007-2013 Chevy Silverado Extended Cab and GMC Sierra Extended Cab trucks Fits single 8 inch, 10 inch, and 12 inch subwoofer Subwoofer fires down 5/8 inch MDF Air space = .6 cubic ft per sub Mounting depth for 8 inch sub = 6 inches Mounting depth... Choose Options
2007-2013 Chevy Silverado Extended Cab Dual Sub Box Xtreme Enclosures $209.25 2007-2013 CHEVROLET SILVERADO and GM SIERRA EXTENDED CAB TRUCK Note: This does not fit 2007 Old Classic Body Style. If you have the 2007 Extended Cab, please check to see if you have the new or old body style. If unsure, please contact us. Fits dual... Choose Options
PORTED Dual Sub box 2007-2014 GM SIERRA CREW DUAL SUB BOX Xtreme Enclosures $297.00 Ported / Vented Dual 8 or dual 10 inch subwoofer box Tuned to 38 hz 2.2 Mono Chamber Mounting Depth = 6 inches Fits under the rear seat Subwoofers fire down Charcoal Carpet Oem colors available for an additional fee Note: We can custom tune the box for... Choose Options
Ported Sub box 07-13 GMC Sierra/Chevy Silverado Extended Cab Xtreme Enclosures $322.65 2007-2013 GMC Sierra and Chevy Silverado Extended cab dual ported sub enclosure Note: This does not fit 2007 Old Classic Body Style. If you have the 2007 Extended Cab, please check to see if you have the new or old body style. If unsure, please contact... Choose Options
