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2014-2018 GM Crew Cab Single Downfire Box



2014-2018 GM Crew Cab Single Downfire Box

Fits: 2014-2018 GM 4 Door Crew Cabs
Also Fits 2019 Legacy Edition
Approx. Empty Weight: 15 lbs
MDF Construction
Installs under the rear seat
on Drivers Side.  Passenger Version
Also Available.  See Menu To Order
No modifications required
Does not affect rear seat
Fits 10" and 12" Shallow Subs
Will aloso fit 10Tw3,
No 12Tw3
And even Some Oversize Shallows
Like JL and Sundown
Standard Cutout: 10"=9-1/8", 12"=11-1/8"
Mounting Depth For 10" subs = 6"
Mounting Depth for 12" subs = 4.5"
Magnets no larger than 6" dia.
Volume: .91 cu.ft 
Box to floor clearance: 1.75"
Sealed Box
Finish: Carpet
Terminal: Installed
Subwoofers Sold Separately


See a customer's install here:

f you're looking to add some decent bass to your truck without going overboard or don't want the extra cost of a big box and another woofer, then our single box is just what you need.  A sealed downfire box that fits on the driver's side and will save almost half the space under the back seat.  We can also build this single for the passenger side.  If you prefer this, simply make that section in the options menu. 
Note: if your sub requires more than 1.75" underneath clearance, you will need a seat lift and shim the box up to compensate. 


Available Options:
Drivers Side or Passenger Side:
Speaker Openings:
Carpet Color:

More Images



by Marc Nordhaus Date Added: Friday 15 January, 2016
Got the 10" downward firing box for my 2014 crew cab Silverado hooked up and it sounds great glad I went with sub thump..

Rating: 5 of 5 Stars [5 of 5 Stars]

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This product was added to our catalog on Thursday 05 December, 2013.
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