1999-2006 Chevy Silverado & GMC Sierra Extended Cab Trucks Compatible Dual 12" Subwoofer Enclosure

15 Reviews

Current Price:$159.99
Sale Price:


Skar Audio engineered this custom fit, vehicle specific, Dual 12-inch sealed subwoofer enclosure specifically for 1999-2006 Chevrolet Silverado and GMC Sierra Extended Cab trucks. This enclosure features an OEM design that allows it to fit perfectly under the rear seat bench in the cab of the truck - with absolutely no modifications required. With this subwoofer enclosure we provide a custom solution for you to be able to add a system to your truck without any of the headache that most face in pursuit of this goal.
The sealed, down-firing, under-seat design of this enclosure allows for maximum bass, while preserving the limited cargo space most users are reluctant to give up. Our custom-fit enclosures raise the bar when it comes to strength and reliability; constructed entirely out of premium medium-density fiberboard (MDF) and other world class materials. Our vehicle specific subwoofer enclosures are engineered from the ground up, with every detail carefully analyzed to ensure perfect fitment and compatibility. Furthermore, they are finished in a premium black trunk-liner carpeting, allowing to blend in with your vehicles interior.
Quick Facts
Dual 12" Sealed Subwoofer Enclosure
Under Seat | Down-firing Design
Vehicle Fit
1999-2006 Chevrolet Silverado Extended Cab Trucks and GMC Sierra Extended Cab Trucks
The sealed, independent, dual chamber design of the enclosure allow the drivers to perform dynamically across the entire low-end sound spectrum, creating an incredible listening experience. Internally, we line each of the subwoofer chamber walls with poly-fill to enhance the overall versatility and depth of sound that this enclosure reproduces. Coinciding with the separate subwoofer chambers are independent terminal cups that feature premium 12-gauge OFC speaker wire, pre-soldered and connected to the terminals on the interior of the enclosure.
Product Info
General Specifications
Wood Type
Fitment Type
Vehicle Specific
Enclosure Type
Wood Thickness
Enclosure Finish
Fits How Many Subs
Subwoofer Direction
Enclosure Finish Color
Subwoofer Compatibility Size
Internal Speaker Wire Leads Pre-soldered
12 AWG
External Push Terminal Wire Gauge Opening
Technical Specifications
Number of Ports
N/A (Sealed)
Number of Subwoofer Chambers
Number of Terminal Cup Connections
Enclosure External Dimensions
Subwoofer Mounting Parameters
Subwoofer Hole Cut-out Diameter
Subwoofer Maximum Mounting Depth
Compatibility Chart
IX-12 D2/D4
VD-12 D2/D4
DDX-12 D2/D4
EVL-12 D2/D4
SDR-12 D2/D4
SVR-12 D2/D4

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Customer Reviews


Based on 15 reviews

  • Great Product!
    Reviewed on 5/31/2022 by Ricky
    Verified Buyer
    Subs hit harder then I expected!
  • Great Box
    Reviewed on 5/23/2022 by Dustin
    Verified Buyer
    This box hits real hard and sounds great, I wish it had tune specs though
  • Great Product
    Reviewed on 5/2/2022 by Bruce
    Verified Buyer
    Fits perfect in my truck and a great price.
  • Null
    Reviewed on 4/3/2022 by Todd
    Verified Buyer
    1999-2006 Chevy Silverado & GMC Sierra Extended Cab Trucks Compatible Dual 12" Subwoofer Enclosure
  • Powerful
    Reviewed on 4/1/2022 by Manuel
    Verified Buyer
    Speakers were better than expected. Responsive and clean. Amplifier did not dissapoint.The speaker box looked really clean but the speakers blew the box apart on the second day. Co
  • Only Able To Mount Shallow Mounts Under The Seat
    Reviewed on 3/22/2022 by Cody
    Verified Buyer
    I bout some more speakers cause I was only able to mount shallow speakers under my seat in the box but other than that happy with the product
  • Fantastic Buying Experience
    Reviewed on 3/18/2022 by Marica
    Verified Buyer
    I received great customer service. We ordered the wrong item, they promptly issued a return and item was refunded in the best timely manner. Items were shipped out and received on
  • Amazing Quality! Even Better Sound!
    Reviewed on 3/14/2022 by Khyzal
    Verified Buyer
    I’ve had 2 12” Rockford Fosgates under the back seat in my truck for a while now in 2 separate 12” truck boxes, that never really sounded all that good but did the job. The Skar Au
  • Nice Fit
    Reviewed on 10/8/2021 by Dustin
    Verified Buyer
    The dual 12 enclosure was perfect fit in my extended cab truck
  • Null
    Reviewed on 4/14/2021 by William
    Verified Buyer
    Graet sound space saving got 800 watt skar 12s clean sound vary happy
  • Great Box
    Reviewed on 4/9/2021 by Nathan
    Verified Buyer
    Honestly a lot nicer than I expected for its price. The quality is great and it fit perfectly under my seat. 05 Sierra 1500 extended cab
  • 1999-2006 Chevy Silverado Speaker Box
    Reviewed on 3/23/2021 by Justin
    Verified Buyer
    Fits great definitely worth it love the design works perfectly fine comes with wires and my girlfriends brother loves it
  • Null
    Reviewed on 3/20/2021 by Jason
    Verified Buyer
    The box was exactly what I was looking for. Fits perfect and sounds amazing. Before installing did a test fit in his single cab 2004 Chevy and faced it forward. Sounded amazing in
  • 12” Low Profile Still Subwoofer Box 06 Silverado
    Reviewed on 2/1/2021 by Ian
    Verified Buyer
    Very impressed with the sound quality I don’t know what took them so long to come out with a box for the subs the compatibility is perfect
  • 12” Low Profile Box
    Reviewed on 1/24/2021 by Ian
    Verified Buyer
    Very good quality I don’t know why it took them so long to come out with one I’ve tried two different boxes before this one the subs match up perfectly with the box they hit hard a
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