1999-2006 Silverado Extended Cab Quad Sub Box

1999-2006 Silverado Extended Cab Quad Sub Box

Xtreme EnclosuresCustom Built: Estimated lead time of 20-40 Business days.
SKU: CHEVY GM 99-06 QUAD In Stock
Regular price$518.70

A quad Silverado extended cab sub box for 1999-2006 Chevrolet Silverado and GMC Sierra extended cab trucks. It is a pair of down-firing boxes, each holding two subs, for four 8" or four 10" subwoofers in total, with 1.3 cu ft of airspace per box.

Fits

  • Chevrolet Silverado and GMC Sierra extended cab, 1999-2006
  • Also the 2007 extended cab in the old (Classic) body style; it does not fit the new body
  • Not sure whether your 2007 is the old or new body style? Call before ordering
  • Does not fit the HD crew cabs

Specs

Subwoofers Four 8" or four 10" (two per box); each sub no wider than 10.5"
Firing direction Down
Airspace 1.3 cu ft per box
Mounting depth 6.5"
Cutouts Standard: 7" for 8" subs, 9 1/8" for 10" subs
Terminals Speaker terminals included
Included A pair of boxes, two subs in each

Choosing your subs

Each sub must be no wider than 10.5" across and no deeper than 6.5", so some square or oversized 10" subs will not fit; check the frame size as well as the cutout. Type the sub model in the "What Sub Model are you using?" box when ordering so the holes are cut to match; the builder can look up the specs from the model. Shop 8" subwoofers or 10" subwoofers.

Built to order

Built to order by Xtreme Enclosures as a matched pair, carpeted with 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
Add to wishlist
Add to compare
Payment Options

Help

If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.

Customer service

All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com

Sale & Press

If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com

A quad Silverado extended cab sub box for 1999-2006 Chevrolet Silverado and GMC Sierra extended cab trucks. It is a pair of down-firing boxes, each holding two subs, for four 8" or four 10" subwoofers in total, with 1.3 cu ft of airspace per box.

Fits

  • Chevrolet Silverado and GMC Sierra extended cab, 1999-2006
  • Also the 2007 extended cab in the old (Classic) body style; it does not fit the new body
  • Not sure whether your 2007 is the old or new body style? Call before ordering
  • Does not fit the HD crew cabs

Specs

Subwoofers Four 8" or four 10" (two per box); each sub no wider than 10.5"
Firing direction Down
Airspace 1.3 cu ft per box
Mounting depth 6.5"
Cutouts Standard: 7" for 8" subs, 9 1/8" for 10" subs
Terminals Speaker terminals included
Included A pair of boxes, two subs in each

Choosing your subs

Each sub must be no wider than 10.5" across and no deeper than 6.5", so some square or oversized 10" subs will not fit; check the frame size as well as the cutout. Type the sub model in the "What Sub Model are you using?" box when ordering so the holes are cut to match; the builder can look up the specs from the model. Shop 8" subwoofers or 10" subwoofers.

Built to order

Built to order by Xtreme Enclosures as a matched pair, carpeted with speaker terminals. Estimated lead time: 20–40 business days.

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

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.

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.

Related Products