<![CDATA[Sound Off Audio, Inc.: New Products - Ported Dual Sub box]]> https://www.soundoffaudio.com Sat, 04 Apr 2026 02:08:46 +0000 <![CDATA[Ported Sub box 07-13 GMC Sierra/Chevy Silverado Extended Cab]]> https://www.soundoffaudio.com/ported-sub-box-07-13-gmc-sierra-chevy-silverado-extended-cab/ Sat, 06 Jul 2013 13:09:18 +0000 https://www.soundoffaudio.com/ported-sub-box-07-13-gmc-sierra-chevy-silverado-extended-cab/ Ported Sub box 07-13 GMC Sierra/Chevy Silverado Extended Cab

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 ..

Price: $399.00

]]> Ported Sub box 07-13 GMC Sierra/Chevy Silverado Extended Cab

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 ..

Price: $399.00

]]> 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 ..]]>