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Chevy Silverado / GMC Sierra Extended Cab 99-06 Dual Subwoofer Box

SKU: 99ChevyECdual
5.00 (2 reviews)
Fits 1999 - 2006 Chevy Silverado / GMC Sierra Extended Cab (also fits 2007 Classic)

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Regular Construction - Built within 4-6 days

Expedited Construction - Built within 48 hours (Adds $99.00)

Upgrades Available with this Product:

Two (2) Upgraded Speaker Terminals (Adds $25.00)

Speaker Wire - 2 x 20" - 12 Gage Wire w/Clips (Adds $10.00)

Acoustic Stuffing - 2 Subwoofers (Adds $30.00)

$199.00 to $616.00

Is your Truck Stereo Lacking Bass?
Get a Subwoofer box for your 1999 - 2006 Chevy Silverado / GMC Sierra Extended Cab and start making your friends jealous with the sound quality you can get from your truck.  

The level of improvement from adding a subwoofer enclosure is unmatched compared to any other improvement you can do to your system. 

This subwoofer box installs in minutes and is engineered to fit the 1999 - 2006 Chevy Silverado / GMC Sierra Extended cab.  We use high quality MDF and precision manufacturing in all of our Subwoofer enclosures.

Features:

  • Will fit 2007 Classic
  • Fits 8, 10 or 12 inch subwoofers
  • MDF construction
  • Subs fire down
  • Fits under rear seat
  • 1 1/4" clearance under the box
  • Air Space = .85 cubic foot Per Sub 
  • Mounting Depth = 6 1/4" (8" & 10") (Optional 6 7/8")
  • Mounting Depth = 6" (12") (Optional 6 5/8")
  • Mounting Depth based on 6" diameter magnet
  • Box divider and speaker terminals included
  • Hole cutout for 8" Sub = 7"
  • Hole cutout for 10" Sub = 9 1/8"
  • Hole cutout for 12" Sub = 11"
  • Subwoofers and/or amplifiers not included
  • Charcoal Grey Carpet

Optional carpet colors available to match your interior

NOTE: Please tell us what subwoofer you are planning to use, so we can ensure proper fit in your speaker box.

We build all of our Subwoofer boxes to order, so if you need your box to be customized we can do that for you.  Most of our Subwoofer enclosures include multiple cutout size options, mounting depths and colors.  If your subwoofer enclosure needs a non-standard hole size, just let us know and we will be happy to customize it for you for FREE!

5.00 Global Rating: 5.00 from 2 reviews
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Chevy Silverado / GMC Sierra Extended Cab 99-06 Dual Subwoofer Box 5.0 Supercrewsound 04 Silverado extended cab box, By Justin Ingram Haven’t installed yet, but the box is awesome. I talked to them over the phone and we verbally went over what subs I had and if they would work in their box before them sending it out. Quality work inside and out of this box. Stoked to throw it in. Very good customer service.
Chevy Silverado / GMC Sierra Extended Cab 99-06 Dual Subwoofer Box 5.0 My 2nd supercrew box By Joshua Sillsby My second box from them, the 1st 3 years ago was for an '09 Camry - it was perfect (fit, quality, craftsmanship) Boxes are well built and high quality. My only issue is they ask for your speaker model so box can be built to spec, this time around that didn't seem to matter, the cutouts were too small so subs did not fit. I currently have that Camry box laying on the floor of my Sierra until I have time to fix new box - Camry box is still perfect after 2.5 years of abuse and 6 months as a scratching post for my cat, RF p310s still bang hard but my new kappas are homeless, scared and hungry and my cat is looking at my new box with wide eyes... Sarcasm aside they build high quality boxes, I have nothing bad to say about overall construction and finish, mistakes happen, and I'm a bitter s.o.b.