SSBOXES Chevy Silverado/GMC Sierra Crew Cab 2014-2018 Dual 8-Inch Ported Subwoofer Box

SSBOXES dual 8-inch ported subwoofer box fits 2014-2018 Chevy Silverado and GMC Sierra Crew Cab trucks for a clean under-seat bass upgrade.

2014-2018 Silverado / Sierra Crew Cab 2x8 Ported Box

This 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.

Vehicle Fitment

• Fits: 2014-2018 Chevy Silverado Crew Cab
• Fits: 2014-2018 GMC Sierra Crew Cab
• Cab style: Crew Cab
• Subwoofer layout: Two 8-inch subwoofers
• Manufacturer SKU: SS8CH14CC28

Box Specs

• Configuration: Ported 2x8 subwoofer box
• Air space: 2.6 cubic feet
• Mounting depth: 8.5 inches
• Finish: Bedliner spray coating
• Made in USA

Best Use

Choose 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.

Fitment Note

Seat style, floor layout, trim, and aftermarket equipment can affect fitment. Confirm your exact cab style and available mounting depth before installation.