Add to Cart Compare Quick view Xtreme Enclosures DUAL SUB BOX 2007-2013 GM SIERRA EXTENDED CAB MSRP: 1800woofers Price Now: $297.28 Was: 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... GMEC07-13 DUAL MSRP: 1800woofers Price Now: $297.28 Was: Add to Cart Compare Quick view
Add to Cart Compare Quick view Xtreme Enclosures SINGLE SUB BOX 2007-2013 GM SIERRA EXTENDED CAB MSRP: 1800woofers Price Now: $237.50 Was: 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 wood Air space = .6 cubic ft per... GMEC07-13 SINGLE MSRP: 1800woofers Price Now: $237.50 Was: Add to Cart Compare Quick view
Add to Cart Compare Quick view Xtreme Enclosures PORTED DUAL SUB BOX 1999-2006 GM SIERRA EXTENDED CAB MSRP: 1800woofers Price Now: $439.08 Was: 1999-2006 Gmc Sierra Extended Cab 1999-2006 Chevrolet Silverado Extended Cab Note: This will also fit 2007 Old Classic Body Style. If you have the 2007 Extended Cab, please check to see if you... GMEC9906 PORTED MSRP: 1800woofers Price Now: $439.08 Was: Add to Cart Compare Quick view
Add to Cart Compare Quick view Xtreme Enclosures Four 8 inch Sub Box 1999-2006 GM SIERRA EXTENDED CAB MSRP: 1800woofers Price Now: $439.08 Was: FITS 1999-2006 CHEVROLET AND GMC SIERRA EXTENDED CAB TRUCKS THIS DOES NOT FIT THE HD CREW CABS Note: This also fits the 2007 Class (Old) Body Style Extended Cab; not new body.If you have a 2007 and... GMEC9906 QUAD SUB BOX MSRP: 1800woofers Price Now: $439.08 Was: Add to Cart Compare Quick view
Add to Cart Compare Quick view Xtreme Enclosures Dual Sub Box w/AMP RACK 1999-2006 GM SIERRA EXTENDED CAB DUAL SUB BOX AMP RACK MSRP: 1800woofers Price Now: $317.34 Was: FITS 1999-2006 CHEVROLET SILVERADO EXTENDED CAB DUAL 10 SUBWOOFER ENCLOSURE This box has an amplifier rack. Features: This is the whole box with an amplifier rack in the center, we do sell this box... GMEC9906 DUAL AMP RACK MSRP: 1800woofers Price Now: $317.34 Was: Add to Cart Compare Quick view
Add to Cart Compare Quick view Xtreme Enclosures Dual Sub Box 1999-2006 GM SIERRA EXTENDED CAB MSRP: 1800woofers Price Now: $297.38 Was: FITS 1999-2006 CHEVROLET SILVERADO / GMC SIERRA EXTENDED CAB DUAL SUBWOOFER ENCLOSURE Note: This will also fit 2007 Old Classic Body Style. If you have the 2007 Extended Cab, please check to see if... GMEC9906 DUAL MSRP: 1800woofers Price Now: $297.38 Was: Add to Cart Compare Quick view
Add to Cart Compare Quick view Xtreme Enclosures Single Sub Box 1999-2006 GM SIERRA EXTENDED CAB MSRP: 1800woofers Price Now: $237.50 Was: Note: This will also 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. Features: Fits... gmec9906 single MSRP: 1800woofers Price Now: $237.50 Was: Add to Cart Compare Quick view
Add to Cart Compare Quick view Xtreme Enclosures Pair of Single Sub Boxes 1999-2006 GM SIERRA EXTENDED CAB MSRP: 1800woofers Price Now: $297.38 Was: 1999 TO 2006 CHEVY SILVERADO AND GMC SIERRA EXTENDED CAB TRUCK SUBWOOFER ENCLOSURE This does not fit the Crew Cab Heavy Duty models. Note: This will also fit 2007 Old Classic Body Style. If you... GMEC9906 DUAL PAIR MSRP: 1800woofers Price Now: $297.38 Was: Add to Cart Compare Quick view
Add to Cart Compare Quick view Xtreme Enclosures PORTED Dual Sub box 2007-2014 GM SIERRA CREW DUAL SUB BOX MSRP: 1800woofers Price Now: $439.08 Was: 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... GMCRW 07 DUAL PORTED MSRP: 1800woofers Price Now: $439.08 Was: Add to Cart Compare Quick view
Add to Cart Compare Quick view Xtreme Enclosures Single Sub Box w/AMP RACK 2007-2013 GM SIERRA CREW MSRP: 1800woofers Price Now: $297.38 Was: Fits: 2007 to 2013 Chevrolet Silverado Crew Cab truck 2007 to 2013 GMC Sierra Crew Cab truck 2014 GMC 2500 and 3500 Crew Cab trucks 2014 Chevrolet 2500 and 3500 Crew Cab trucks *WILL NOT FIT THE... GMCREW 07 SINGLE AMP RACK MSRP: 1800woofers Price Now: $297.38 Was: Add to Cart Compare Quick view
On Sale Add to Cart Compare Quick view Xtreme Enclosures (Open Box) DUAL Sub Box w/AMP RACK 2007-2013 GM SIERRA CREW MSRP: 1800woofers Price Now: $249.99 Was: $297.38 ****ALL SALES ARE FINAL, SOLD AS IS**** Specs: Carpet Colors: Charcoal Add Pollyfil?: No Cutout Size: Dual 10 (1/4 inch) 2007-2014 CHEVROLET Silverado Crew and GMC Sierra Crew Cab trucks. NOTE:... Open Box GMCRW 07 DUAL AMP RACK MSRP: 1800woofers Price Now: $249.99 Was: $297.38 Add to Cart Compare Quick view
Add to Cart Compare Quick view Xtreme Enclosures Single Sub Box 2007-2013 GM SIERRA CREW MSRP: 1800woofers Price Now: $217.55 Was: 2007-2014 CHEVROLET SILVERADO CREW CAB TRUCK Fits 2007-2013 heavy duty and half ton. Fits 2014 2500 and 3500 crew cab trucks NOTE: This sub box will not fit the 2014 1500 (1/2 ton) Crew Cab... GMCREW 07 SINGLE MSRP: 1800woofers Price Now: $217.55 Was: Add to Cart Compare Quick view