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Chevy Silverado / GMC Sierra Extended Cab 88-98 Dual Subwoofer Box

SKU: 88ChevyECdual
5.00 (1 reviews)
Fits 1988 - 1998 Chevy Silverado / GMC Sierra Extended Cab

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Regular Construction - Built within 4-6 days

Expedited Construction - Built within 48 hours (Adds $30.00)

Upgrades Available with this Product:

Two (2) Upgraded Speaker Terminals (Adds $16.00)

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

Acoustic Stuffing - 2 Subwoofers (Adds $20.00)

$139.00 to $234.00

Is your Truck Stereo Lacking Bass?
Get a Subwoofer box for your 1988 - 1998 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 1988 - 1998 Chevy Silverado / GMC Sierra Extended cab.  We use high quality MDF and precision manufacturing in all of our Subwoofer enclosures.


  • Fits 8 or 10 inch subwoofers
  • MDF construction
  • Subs fire down
  • Fits under rear seat
  • Jack removal is required
  • 1 1/4" clearance under the box
  • Air Space = .75 cubic foot Per Sub 
  • Mounting Depth = 5 1/4" 
  • 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"
  • 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 1 reviews
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Chevy Silverado / GMC Sierra Extended Cab 88-98 Dual Subwoofer Box 5.0 The best By felix moncada This fit perfectly in my 98 Chevy 2500 mounted two alpine baseline subs sound is amazing Thankyou