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FOUR 8" GM Crew Cab SUBWOOFER ENCLOSURES with billet seat lift included. Fits all 1999 through 2006 1500, 2500hd and 3500hd GM extended cab trucks. Requires 2.5” seat lift. INCLUDES BILLET SEAT LIFT KIT Cut...

Measures 36”W X 12”H X 22”D — 48” of port area Curved slot ported enclosure 1” Russian Baltic Birch Tunes to 33hrz and has an estimated bandwidth of 26-71hrz. Cutout: 9.25" Mounting Depth: 11" ** Boxes...

TWO 8" GM Crew Cab SUBWOOFER ENCLOSURES with billet seat lift included. Fits all 2008-2018 1500, 2500hd and 3500hd GM crew cab trucks. Requires 2.5” seat lift. INCLUDES BILLET SEAT LIFT KIT Cut to fit two 8”...

Measures 26”W X 15.5”H X 15”D — 25.5” of port area Curved slot ported enclosure 1” Russian Baltic Birch Tunes to 33hrz and has an estimated bandwidth of 25-67hrz. Cutout: 11.125" Mounting Depth: 10...

Measures  20"W x 13"H x 12"D — 10” of port area Curved slot ported enclosure 1” Russian Baltic Birch Tunes to 36hrz and has an estimated bandwidth of 31-66hrz. Cutout: 5.85" Mounting Depth: 7.5" ** Boxes...

Measures 22”W X 13”H X 12.5”D — 14” of port area Curved slot ported enclosure 1” Russian Baltic Birch Tunes to 34hrz and has an estimated bandwidth of 26-68hrz. Cutout: 9.25" Mounting Depth: 8.5" **...

Measures 22.5”W X 15.5”H X 15”D — 24” of port area Curved slot ported enclosure 1” Russian Baltic Birch Tunes to 35hrz and has an estimated bandwidth of 29-70hrz. Cutout: 9.25" Mounting Depth: 10.625" **...

Measures 27”W X 11”H X 17”D — 25” of port area Kerf cut, slot ported enclosure 1” Russian Baltic Birch Tunes to 34hrz and has an estimated bandwidth of 29-70hrz. Cutout: 9.25" Mounting Depth: 12" **...

Measures 22.5”W X 15.5”H X 15”D — 24” of port area Curved slot ported enclosure 1” Russian Baltic Birch Tunes to 35hrz and has an estimated bandwidth of 29-70hrz. Cutout: 11.125" Mounting Depth: 10.625"...

Measures 29.5”W X 15.5”H X 15”D — 31” of port area Curved slot ported enclosure 1” Russian Baltic Birch Tunes to 33hrz and has an estimated bandwidth of 26-68hrz. Cutout: 11.125" Mounting Depth: 9...

Measures 34”W X 15.5”H X 15”D — 36” of port area Curved slot ported enclosure 1” Russian Baltic Birch Tunes to 33hrz and has an estimated bandwidth of 26-67hrz. Cutout: 9.25" Mounting Depth: 10" ** Boxes...

Measures 32”W X 15”H X 19”D — 40” of port area Curved slot ported enclosure 1” Russian Baltic Birch Tunes to 32hrz and has an estimated bandwidth of 27-62hrz. Cutout: 11.125" Mounting Depth: 11.625"...