GMC Sierra Extended Cab Pickup Truck

Nothing creates better bass in your GMC CK or Sierra Extended Cab Pickup truck then the addition of a custom-fit subwoofer enclosure.  Subwoofer Enclosures for your GMC EXT Cab Pickup truck are supplied by several manufacturers.  They are available in fiberglass, composites and MDF construction.  Every car or truck has wasted space. Places behind or beneath the seats or on the sides of hatchbacks or sedan trunks.  Those spaces can now be put to good use.

GMC Sierra Extended Cab Pickup truck 1997 1997 1999 2000 2001 2002 2002 2003 2004 2005 2006 2007 2008*

*see details for specific year applications

Gmc Sierra Ext Cab Subwoofer Box

Bassforms Fiberglass- For top quality bass reproduction, we recommend the fiberglass subwoofer enclosures by Bassforms.  Most Bassform fiberglass subwoofer enclosures also provide a nice mounting area for you amplifier.  It is the opinion of most users that true fiberglass sub enclosures provide the best sounding bass.  This model provides mounting of two-10" subwoofers and includes an amplifier rack. 

MTX Thunderform subwoofer enclosures are famous for their sound quality.  MTX Thunderforms are available without a subwoofer, with just a subwoofer installed and also with a sub and amplifier installed.  The major benefit of the amplified Thunderform is that it includes a class D amplifier and provides a fast installation in most situations. Thunderforms are molded from a high density polyethylene resin.

Q Custom subwoofer enclosures are very similar to the MTX Thunderform in appearance being vacuum formed from a composite material but are only provided as the empty sub enclosure. This model provides mounting for a single 10" subwoofer.

Obcon subwoofer enclosures - Obcon and R/T subwoofer enclosures are constructed of MDF.  Most models are available in vented versions also.  The combination of MDF construction and vented configuration translates into louder bass then most.  See details of their construction and decide for yourself.