1999-2006 Chevy Extended Cab Dual Sub Box with Amp Rack
1999-2006 Chevy Extended Cab Dual Sub Box with Amp Rack

1999-2006 Chevy Extended Cab Dual Sub Box with Amp Rack

Xtreme EnclosuresCustom Built: Estimated lead time of 20-40 Business days.
SKU: GMCHEVYEC 99-06 DUAL W/AMP RACK In Stock
Regular price$323.70

A one-piece 1999-2006 Silverado extended cab sub box that fits under the rear seat, with an amplifier rack built into the middle. It holds two 8", two 10" or two 12" subwoofers in 1.3 cu ft of total airspace, and it also fits the 2007 Classic body Silverado extended cab.

Fits

  • Chevrolet Silverado extended cab, 1999-2006
  • Also fits the 2007 Classic body Silverado extended cab
  • Mounts under the rear seat
  • This version includes the center amp rack; versions without the rack (a single full-width box, or a pair of boxes) are separate listings

Specs

Subwoofers Two 8", two 10" or two 12"
Airspace 1.3 cu ft for the whole box
Mounting depth 7" with dual 10s; 6.75" with dual 12s
Cutouts Standard: 7" for 8s, 9 1/8" for 10s, 11 1/8" for 12s
Construction CNC cut; amplifier rack in the center of the box
Terminals Speaker terminals included

Choosing your subs

Check your subs against the depth for their size: up to 7" for 10s and 6.75" for 12s (Xtreme Enclosures has not published a separate figure for 8s). If you already have subs, type the sub model in the "What Sub Model are you using?" box when ordering so the cutouts are made for them. Shop 8" subwoofers, 10" subwoofers or 12" subwoofers.

Built to order

Built to order by Xtreme Enclosures: CNC cut and assembled, with carpet and speaker terminals. 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 one-piece 1999-2006 Silverado extended cab sub box that fits under the rear seat, with an amplifier rack built into the middle. It holds two 8", two 10" or two 12" subwoofers in 1.3 cu ft of total airspace, and it also fits the 2007 Classic body Silverado extended cab.

Fits

  • Chevrolet Silverado extended cab, 1999-2006
  • Also fits the 2007 Classic body Silverado extended cab
  • Mounts under the rear seat
  • This version includes the center amp rack; versions without the rack (a single full-width box, or a pair of boxes) are separate listings

Specs

Subwoofers Two 8", two 10" or two 12"
Airspace 1.3 cu ft for the whole box
Mounting depth 7" with dual 10s; 6.75" with dual 12s
Cutouts Standard: 7" for 8s, 9 1/8" for 10s, 11 1/8" for 12s
Construction CNC cut; amplifier rack in the center of the box
Terminals Speaker terminals included

Choosing your subs

Check your subs against the depth for their size: up to 7" for 10s and 6.75" for 12s (Xtreme Enclosures has not published a separate figure for 8s). If you already have subs, type the sub model in the "What Sub Model are you using?" box when ordering so the cutouts are made for them. Shop 8" subwoofers, 10" subwoofers or 12" subwoofers.

Built to order

Built to order by Xtreme Enclosures: CNC cut and assembled, with carpet and speaker terminals. 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 :
Visa, MasterCard, American Express, Paypal, Diners Club, Discover and more.

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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