Single Sub Box for 2007-2013 GMC Sierra Extended Cab
Single Sub Box for 2007-2013 GMC Sierra Extended Cab

Single Sub Box for 2007-2013 GMC Sierra Extended Cab

Xtreme EnclosuresCustom Built: Estimated lead time of 20-40 Business days.
SKU: GMEC07-13 SINGLE In Stock
Regular price$258.70

A Sierra sub box for the 2007-2013 GMC Sierra extended cab, and the Chevy Silverado extended cab of the same years. It holds a single 8", 10" or 12" subwoofer firing down, with 0.6 cubic feet of airspace, and is made from 5/8" MDF.

Fits

  • 2007-2013 GMC Sierra extended cab
  • 2007-2013 Chevy Silverado extended cab
  • Extended cab only; does not fit the crew cab
  • Mounts under the seat

Specs

Subwoofers One 8", 10" or 12"
Enclosure type Single sub, fires down
Airspace 0.6 cu ft per sub
Mounting depth 8" sub: 6"
10" sub: 6"
12" sub: 5 5/8"
Cutouts (standard) 8": 7"
10": 9 1/8"
12": 11 1/8"
Construction 5/8" MDF
Terminals Speaker terminal included

Choosing your subs

Some subs with large magnets may not fit, so check your sub's mounting depth, magnet and cutout against the specs above, and make sure it suits 0.6 cu ft. A sub larger than these specs will not fit. Type your sub model in the "What Sub Model are you using?" box when ordering so the box is cut to match. Shop 8" subwoofers, 10" subwoofers or 12" subwoofers.

Built to order

Built to order by Xtreme Enclosures from 5/8" MDF and carpeted. Estimated lead time: 20–40 business days.

Questions before you order? Call SSA at (443) 345-1537 or email support@soundsolutionsaudio.com.

Sale Ends November 19th, 2026
Minimum Purchase of $349.00
*Applies to Mechman, SSA Limitless Lithium & XS Power Products ONLY
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A Sierra sub box for the 2007-2013 GMC Sierra extended cab, and the Chevy Silverado extended cab of the same years. It holds a single 8", 10" or 12" subwoofer firing down, with 0.6 cubic feet of airspace, and is made from 5/8" MDF.

Fits

  • 2007-2013 GMC Sierra extended cab
  • 2007-2013 Chevy Silverado extended cab
  • Extended cab only; does not fit the crew cab
  • Mounts under the seat

Specs

Subwoofers One 8", 10" or 12"
Enclosure type Single sub, fires down
Airspace 0.6 cu ft per sub
Mounting depth 8" sub: 6"
10" sub: 6"
12" sub: 5 5/8"
Cutouts (standard) 8": 7"
10": 9 1/8"
12": 11 1/8"
Construction 5/8" MDF
Terminals Speaker terminal included

Choosing your subs

Some subs with large magnets may not fit, so check your sub's mounting depth, magnet and cutout against the specs above, and make sure it suits 0.6 cu ft. A sub larger than these specs will not fit. Type your sub model in the "What Sub Model are you using?" box when ordering so the box is cut to match. Shop 8" subwoofers, 10" subwoofers or 12" subwoofers.

Built to order

Built to order by Xtreme Enclosures from 5/8" MDF and carpeted. Estimated lead time: 20–40 business days.

Questions before you order? Call SSA at (443) 345-1537 or email support@soundsolutionsaudio.com.

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We accept payments with :
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

We accept payments with :
Visa, MasterCard, American Express, Paypal, Diners Club, Discover and more.

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