{"title":"Chevy Silverado \u0026 GMC Sierra Subwoofer Boxes","description":"\u003cp\u003eShop Chevrolet Silverado and GMC Sierra subwoofer boxes for crew cab, extended cab, and truck bass builds.\u003c\/p\u003e","products":[{"product_id":"ssboxes-chevy-silverado-gmc-sierra-2500-3500-extended-cab-4x8-front-fire-ported-subwoofer-box","title":"SSBOXES Chevy Silverado\/GMC Sierra 2500\/3500 Extended Cab Quad 8-Inch Front-Fire Ported Subwoofer Box","description":"\u003cp\u003eSSBOXES front-fire quad 8-inch ported subwoofer box is built for Chevy Silverado and GMC Sierra Extended Cab 2500\/3500 HD trucks with the matching rear-seat floor layout.\u003c\/p\u003e\u003ch2\u003eChevy\/GMC 2500 and 3500 Extended Cab 4x8 Front-Fire Box\u003c\/h2\u003e\u003cp\u003eThis enclosure is for customers searching for a 4x8, 4 8, or quad 8 subwoofer box for a Chevy or GMC Extended Cab HD truck. It is designed for strong truck bass with a front-fire ported layout and a heavy-duty bedliner-style coating.\u003c\/p\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFits: Chevy Silverado Extended Cab 2500 and 3500 HD models with the same seating\/floor style\u003c\/li\u003e\n\u003cli\u003eFits: GMC Sierra Extended Cab 2500 and 3500 HD models with the same seating\/floor style\u003c\/li\u003e\n\u003cli\u003eDoes not fit Crew Cab models\u003c\/li\u003e\n\u003cli\u003eSubwoofer layout: Four 8-inch subwoofers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBox Dimensions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLength: 54 inches\u003c\/li\u003e\n\u003cli\u003eWidth: 14.75 inches\u003c\/li\u003e\n\u003cli\u003eFront height: 10 inches\u003c\/li\u003e\n\u003cli\u003eRear height: 7 inches\u003c\/li\u003e\n\u003cli\u003eMounting depth: 8.75 inches\u003c\/li\u003e\n\u003cli\u003eWoofer cutouts: 7.5 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePort and Build Specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePort length: 9.5 inches\u003c\/li\u003e\n\u003cli\u003ePort width: 2.5 inches\u003c\/li\u003e\n\u003cli\u003ePort height: 3.75 inches\u003c\/li\u003e\n\u003cli\u003eAir space per sub: 0.7 cubic feet\u003c\/li\u003e\n\u003cli\u003eBox tuning: 37 Hz\u003c\/li\u003e\n\u003cli\u003eWood type: High-quality MDF\u003c\/li\u003e\n\u003cli\u003eFinish: Black Armor bedliner-style coating\u003c\/li\u003e\n\u003cli\u003eSpeaker terminals included\u003c\/li\u003e\n\u003cli\u003eMade in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstall Notes\u003c\/h3\u003e\u003cp\u003eSpeaker wire and metal screws are not included. Confirm your exact cab style, seat layout, floor shape, and mounting depth before ordering or installing.\u003c\/p\u003e","brand":"SSBOXES","offers":[{"title":"Default Title","offer_id":43336109097050,"sku":null,"price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6339\/8490\/files\/e0f50b89-s-l1600-1.webp?v=1778262876"},{"product_id":"ssboxes-chevy-silverado-gmc-sierra-crew-cab-2014-2018-2x8-ported-subwoofer-box","title":"SSBOXES Chevy Silverado\/GMC Sierra Crew Cab 2014-2018 Dual 8-Inch Ported Subwoofer Box","description":"\u003cp\u003eSSBOXES dual 8-inch ported subwoofer box fits 2014-2018 Chevy Silverado and GMC Sierra Crew Cab trucks for a clean under-seat bass upgrade.\u003c\/p\u003e\u003ch2\u003e2014-2018 Silverado \/ Sierra Crew Cab 2x8 Ported Box\u003c\/h2\u003e\u003cp\u003eThis enclosure is made for customers searching for a 2x8, 2 8, or dual 8 subwoofer box with truck-specific fitment instead of a universal enclosure. It is built for daily truck audio systems where clean fitment and usable cabin space matter.\u003c\/p\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFits: 2014-2018 Chevy Silverado Crew Cab\u003c\/li\u003e\n\u003cli\u003eFits: 2014-2018 GMC Sierra Crew Cab\u003c\/li\u003e\n\u003cli\u003eCab style: Crew Cab\u003c\/li\u003e\n\u003cli\u003eSubwoofer layout: Two 8-inch subwoofers\u003c\/li\u003e\n\u003cli\u003eManufacturer SKU: SS8CH14CC28\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBox Specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConfiguration: Ported 2x8 subwoofer box\u003c\/li\u003e\n\u003cli\u003eAir space: 2.6 cubic feet\u003c\/li\u003e\n\u003cli\u003eMounting depth: 8.5 inches\u003c\/li\u003e\n\u003cli\u003eFinish: Bedliner spray coating\u003c\/li\u003e\n\u003cli\u003eMade in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest Use\u003c\/h3\u003e\u003cp\u003eChoose this box for a Silverado or Sierra Crew Cab build where you want two 8-inch subs under the rear seat with a ported enclosure designed for truck bass.\u003c\/p\u003e\u003ch3\u003eFitment Note\u003c\/h3\u003e\u003cp\u003eSeat style, floor layout, trim, and aftermarket equipment can affect fitment. Confirm your exact cab style and available mounting depth before installation.\u003c\/p\u003e","brand":"SSBOXES","offers":[{"title":"Default Title","offer_id":43336109129818,"sku":"SS8CH14CC28","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6339\/8490\/files\/a9e6fd09-SS8CH14CC28.avif?v=1778262875"},{"product_id":"ssboxes-chevy-silverado-gmc-sierra-crew-cab-2014-up-4x8-ported-subwoofer-box","title":"SSBOXES Chevy Silverado\/GMC Sierra Crew Cab 2014-Up Quad 8-Inch Ported Subwoofer Box","description":"\u003cp\u003eSSBOXES quad 8-inch ported subwoofer box fits Chevy Silverado and GMC Sierra Crew Cab trucks for a clean under-seat truck bass upgrade.\u003c\/p\u003e\u003ch2\u003eChevy Silverado \/ GMC Sierra Crew Cab 4x8 Ported Box\u003c\/h2\u003e\u003cp\u003eThis enclosure is made for customers searching for a 4x8, 4 8, or quad 8 subwoofer box with vehicle-specific fitment instead of a loose universal enclosure. It is built for truck audio systems that need strong bass while keeping the cabin layout clean.\u003c\/p\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFits: Chevy Silverado Crew Cab and GMC Sierra Crew Cab\u003c\/li\u003e\n\u003cli\u003eManufacturer fitment note: 2014-up Crew Cab applications\u003c\/li\u003e\n\u003cli\u003eCab style: Crew Cab\u003c\/li\u003e\n\u003cli\u003eSubwoofer layout: Four 8-inch subwoofers\u003c\/li\u003e\n\u003cli\u003eSKU: SS8CH19CC48\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBox Specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConfiguration: Ported 4x8 subwoofer box\u003c\/li\u003e\n\u003cli\u003eAir space: 2.75 cubic feet\u003c\/li\u003e\n\u003cli\u003eMounting depth: 9.5 inches\u003c\/li\u003e\n\u003cli\u003eFinish: Bedliner spray coating\u003c\/li\u003e\n\u003cli\u003eMade in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest Use\u003c\/h3\u003e\u003cp\u003eChoose this box for a Silverado or Sierra Crew Cab build where you want four 8-inch subs under the rear seat with a ported enclosure designed for truck bass.\u003c\/p\u003e\u003ch3\u003eFitment Note\u003c\/h3\u003e\u003cp\u003eVehicle trim, seat style, floor layout, and aftermarket equipment can affect fitment. Confirm your exact year, cab style, and available mounting depth before installation.\u003c\/p\u003e","brand":"SSBOXES","offers":[{"title":"Default Title","offer_id":43336109391962,"sku":"SS8CH19CC48","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6339\/8490\/files\/ec1b67ea-SS8CH19CC48.avif?v=1778262876"},{"product_id":"2014-2018-chevy-gmc-crew-cab-ported-upfire-2x12-subwoofer-box","title":"2014-2018 Chevy\/GMC Crew Cab Ported Upfire 2x12 Subwoofer Box","description":"\u003ch2\u003e2014-2018 Chevy\/GMC Crew Cab Ported Upfire 2x12 Subwoofer Box\u003c\/h2\u003e\n\u003cp\u003eUpgrade your truck bass setup with this \u003cstrong\u003eported upfire 2x12 subwoofer box\u003c\/strong\u003e for \u003cstrong\u003e2014-2018 Chevy Silverado Crew Cab\u003c\/strong\u003e and \u003cstrong\u003e2014-2018 GMC Sierra Crew Cab\u003c\/strong\u003e trucks. This enclosure is built for customers who want a strong under-seat bass box with a clean truck-specific fit.\u003c\/p\u003e\n\u003cp\u003eThis listing is for the \u003cstrong\u003esubwoofer enclosure only\u003c\/strong\u003e. It is designed for \u003cstrong\u003etwo 12 inch subwoofers\u003c\/strong\u003e and uses an \u003cstrong\u003eupfire ported design\u003c\/strong\u003e to help deliver strong bass performance in compatible Crew Cab Chevy and GMC trucks.\u003c\/p\u003e\n\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\n\u003cp\u003eFits \u003cstrong\u003e2014-2018 Chevrolet Silverado Crew Cab\u003c\/strong\u003e and \u003cstrong\u003e2014-2018 GMC Sierra Crew Cab\u003c\/strong\u003e trucks.\u003c\/p\u003e\n\u003cp\u003eCommon fitment includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2014-2018 Chevy Silverado 1500 Crew Cab\u003c\/li\u003e\n\u003cli\u003e2014-2018 Chevy Silverado 2500 Crew Cab\u003c\/li\u003e\n\u003cli\u003e2014-2018 Chevy Silverado 3500 Crew Cab\u003c\/li\u003e\n\u003cli\u003e2014-2018 GMC Sierra 1500 Crew Cab\u003c\/li\u003e\n\u003cli\u003e2014-2018 GMC Sierra 2500 Crew Cab\u003c\/li\u003e\n\u003cli\u003e2014-2018 GMC Sierra 3500 Crew Cab\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e Please confirm your truck year, model, and Crew Cab layout before ordering. This listing is not for Double Cab, Extended Cab, or Single Cab trucks.\u003c\/p\u003e\n\u003ch3\u003eBox Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e 2x12 inch subwoofer enclosure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Ported upfire subwoofer box\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Bedliner spray coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle style:\u003c\/strong\u003e Chevy\/GMC Crew Cab trucks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e USA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping:\u003c\/strong\u003e Free shipping included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBest Search Fitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2014-2018 Chevy Silverado Crew Cab 2x12 subwoofer box\u003c\/li\u003e\n\u003cli\u003e2014-2018 GMC Sierra Crew Cab 2x12 subwoofer box\u003c\/li\u003e\n\u003cli\u003eChevy Silverado Crew Cab ported subwoofer box\u003c\/li\u003e\n\u003cli\u003eGMC Sierra Crew Cab upfire subwoofer enclosure\u003c\/li\u003e\n\u003cli\u003e2 12 under seat truck subwoofer box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePrice is \u003cstrong\u003e$399.00 shipped\u003c\/strong\u003e.\u003c\/p\u003e","brand":"SSBOXES","offers":[{"title":"Default Title","offer_id":43454132158554,"sku":"SSB-CHEVY-GMC-1418-CC-UPFIRE-2X12","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6339\/8490\/files\/2014-2018-chevy-gmc-crew-cab-ported-upfire-2x12-subwoofer-box-bedliner-made-in-usa.png?v=1780610310"},{"product_id":"4x8-chevrolet-silverado-subwoofer-ported-box-quad-4-8-subwoofers","title":"4x8 Chevrolet Silverado Subwoofer Ported Box Quad 4 8\" Subwoofers","description":"","brand":"SSBOXES","offers":[{"title":"4x8\"","offer_id":43456606699610,"sku":null,"price":399.99,"currency_code":"USD","in_stock":true},{"title":"4x10\"","offer_id":43456606732378,"sku":null,"price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6339\/8490\/files\/Screenshot2026-06-05171015.png?v=1780713192"},{"product_id":"2019-2026-chevrolet-silverado-2x10-center-console-subwoofer-box","title":"2019-2026 Chevrolet Silverado 2x10\" Under Seat Subwoofer Box","description":"\u003ch2\u003e2019-2026 Chevrolet Silverado 2x10\" Under Seat Subwoofer Box\u003c\/h2\u003e\u003cp\u003eUpgrade your Silverado with a clean, vehicle-specific 2x10 under seat subwoofer enclosure designed for strong bass output while keeping your truck interior practical and factory-style. This listing is for the enclosure only and is built for customers who want better low-end performance without using a bulky universal box.\u003c\/p\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2019-2026 Chevrolet Silverado 1500\u003c\/li\u003e\n\u003cli\u003e2020-2026 Chevrolet Silverado 2500HD\u003c\/li\u003e\n\u003cli\u003e2020-2026 Chevrolet Silverado 3500HD\u003c\/li\u003e\n\u003cli\u003eDesigned for dual 10-inch subwoofers\u003c\/li\u003e\n\u003cli\u003eUnder seat truck subwoofer enclosure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHighlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDual 10-inch subwoofer openings\u003c\/li\u003e\n\u003cli\u003eChevrolet bowtie logo front panel\u003c\/li\u003e\n\u003cli\u003eVehicle-specific Silverado under seat subwoofer box\u003c\/li\u003e\n\u003cli\u003eGreat for Silverado bass builds, daily driver systems, and custom truck audio installs\u003c\/li\u003e\n\u003cli\u003eWhite-background product image for clean Google Shopping and Meta ads visibility\u003c\/li\u003e\n\u003cli\u003eAvailable for nationwide shipping or local car audio installation in Dallas, Texas\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify cab layout, rear seat space, and subwoofer mounting depth before ordering. Professional installation is recommended for best fit, wiring, and sound performance.\u003c\/p\u003e","brand":"Super Car Audio","offers":[{"title":"Default Title","offer_id":43456791019610,"sku":"SCA-SILVERADO-1926-2X10-UNDERSEAT-BOX","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6339\/8490\/files\/2019-2026-chevrolet-silverado-2x10-console-subwoofer-box-white-background.png?v=1780715552"},{"product_id":"2019-2026-gmc-sierra-2x10-center-console-subwoofer-box","title":"2019-2026 GMC Sierra 2x10\" Under Seat Subwoofer Box","description":"\u003ch2\u003e2019-2026 GMC Sierra 2x10\" Under Seat Subwoofer Box\u003c\/h2\u003e\u003cp\u003eUpgrade your GMC Sierra with a clean, vehicle-specific 2x10 under seat subwoofer enclosure built for strong bass output while keeping your truck interior practical and factory-style. This listing is for the enclosure only and is designed for customers who want a clean bass upgrade without using a bulky universal box.\u003c\/p\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2019-2026 GMC Sierra 1500\u003c\/li\u003e\n\u003cli\u003e2020-2026 GMC Sierra 2500HD\u003c\/li\u003e\n\u003cli\u003e2020-2026 GMC Sierra 3500HD\u003c\/li\u003e\n\u003cli\u003eDesigned for dual 10-inch subwoofers\u003c\/li\u003e\n\u003cli\u003eUnder seat truck subwoofer enclosure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHighlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDual 10-inch subwoofer openings\u003c\/li\u003e\n\u003cli\u003eGMC logo front panel\u003c\/li\u003e\n\u003cli\u003eVehicle-specific Sierra under seat subwoofer box\u003c\/li\u003e\n\u003cli\u003eGreat for GMC Sierra bass builds, custom truck audio systems, and daily driver upgrades\u003c\/li\u003e\n\u003cli\u003eClean white-background product image for Google Shopping, Meta catalog, and paid ad visibility\u003c\/li\u003e\n\u003cli\u003eAvailable for nationwide shipping or local car audio installation in Dallas, Texas\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify cab layout, rear seat space, and subwoofer mounting depth before ordering. Professional installation is recommended for best fit, wiring, and sound performance.\u003c\/p\u003e","brand":"Super Car Audio","offers":[{"title":"Default Title","offer_id":43456792395866,"sku":"SCA-SIERRA-1926-2X10-UNDERSEAT-BOX","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6339\/8490\/files\/2019-2026-gmc-sierra-2x10-console-subwoofer-box-white-background.png?v=1780715583"}],"url":"https:\/\/supercaraudio.com\/collections\/chevy-silverado-gmc-sierra-subwoofer-boxes.oembed","provider":"Super Car Audio","version":"1.0","type":"link"}