BLACK FRIDAY SPECIAL!

5-10 Business Days Build Time!

The performance of a Custom Subwoofer Box without the COST! This is a great option for those looking to SAVE MONEY and DIY but might have limited access to tools. You get all the parts needed to put together your own subwoofer box. All parts are cut to size, sanded smooth, and pre drilled. Assemble can even be done with a screw driver!

*Add Screws, GLUE $45 ADD HERE

*Flared Aero Ports can be included for an additional $50 for 4" or $70 for 6" ADD HERE

*1 Side Plexiglass window can be added for an additional $50 ADD HERE

This is a BLACK FRIDAY SPECIAL ONLY 18 Variants available!

All Boxes are made with subwoofers facing forwards, and ports firing out the side/s

(4) 2018-2024 GM Crew/DBL Cab(Does not require seat Lift)

Will fit! (4-6) 6.5" woofers (2-4) 8" woofers (1-2) 10" Subwoofers

(2)2018-2024 GM Crew/DBL Cab(Requires 2" Seat Lift)

Will fit! (4-6) 6.5" woofers (2-4) 8" woofers (1-4) 10" Subwoofers

(8)2007-2017 GM Crew (Requires 2.5" Seat Lift)

Will fit! (4-6) 6.5" woofers (2-4) 8" woofers (1-2) 10" Subwoofers

(4)2009-2024 Ford Crew (Requires 2.5" Seat Lift)

Will fit! (4-6) 6.5" woofers (2-4) 8" woofers (1-2) 10" Subwoofers

All the above boxes will be built and tuned to your specific application!

**Square woofers will be an additional $75 upcharge

**Woofers like Sundown Audio X10s, Sundown Audio U Series 10, Kicker Solo X10, Kicker L7 10, Sundown Audio Z Series 8s, Any woofers with "oversized" cutouts or oversized mounting depths will be charge an additional $100 as these require special modifications to fit properly.

Get your seat lifts from https://www.lmiwelding.com/

Compatible Truck List!

GM- Chevy/GMC

2008-2013 Chevy Silverado 1500 Crew Cab

2008-2013 Chevy Silverado 2500 Crew Cab

2008-2013 Chevy Silverado 3500 Crew Cab

2014-2018 Chevy Silverado 1500 Crew Cab

2014-2018 Chevy Silverado 2500 Crew Cab

2014-2018 Chevy Silverado 3500 Crew Cab

2007-2014 GMC Sierra 1500 Crew Cab

2007-2014 GMC Sierra 2500 Crew Cab

2007-2014 GMC Sierra 3500 Crew Cab

2015-2018 GMC Sierra 1500 Crew Cab

2015-2018 GMC Sierra 2500 Crew Cab

2015-2018 GMC Sierra 3500 Crew Cab

2019-2024 Chevy Silverado 1500 Crew Cab

2019-2024 Chevy Silverado 2500 Crew Cab

2019-2024 Chevy Silverado 3500 Crew Cab

2019-2024 GMC Sierra 1500 Crew Cab

2019-2024 GMC Sierra 2500 Crew Cab

2019-2024 GMC Sierra 3500 Crew Cab

2019-2024 Chevy Silverado 1500 Double Cab/Extended Cab

2019-2024 Chevy Silverado 2500 Double Cab/Extended Cab

2019-2024 Chevy Silverado 3500 Double Cab/Extended Cab

2019-2024 GMC Sierra 1500 Double Cab/Extended Cab

2019-2024 GMC Sierra 2500 Double Cab/Extended Cab

2019-2024 GMC Sierra 3500 Double Cab/Extended Cab

FORD

2009-2024 Ford F150 SuperCrew

2017-2024 Ford F250 SuperCrew

2017-2024 Ford F350 SuperCrew

Flat Pack Truck Box (DIY Assembly)

Name: Flat Pack Truck Box (DIY Assembly)
Brand: CustomLowz

$449.99

$279.99

Did you read the product details? TYPE "YES" if so!

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Subwoofer brand, model, & Size/Quantity. And tuning Preferences

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Quantity

5-10 Business Days Build time ! Updated 11/24/25

The longest part of the order/lead time is waiting for your order to be "next". After placing your order, you will get a rendering in your email before we start building. Getting your rendering is an indicator that your project in queue to be done soon. Confirming your renderings in a timely manner is imperative to stay on schedule. Your order will be sent VIA UPS and can be tracked via provided tracking number

Lead time History/archive!

10/23/25 - 1-3 Weeks!
Place your parts according to the assembly instructions. Glue each Joint (as a good rule you should use enough wood glue that there is a bit of squeeze out when placing each part) and Secure each part with supplied or recommended wood screws. You will need a t20 screw driver and/or drill/impact to assemble if using the supplied screws. Be sure to not over tighten. Clamps are recommended but not needed. If not using the supplied wood glue, we recommend titebond 2. Clean away excess glue with a damp rag periodically during assembly process.

If you added a plexiglass window, use clear silicone and run a thin bead around the entire perimeter of the window cutout approximately 1/2" - 3/4" away from the cutout. ( To limit excess squeeze out, only use a thin bead of silicone as it is only used for a air seal. If excess squeeze out occurs wait from it to fully cure before removing. Only remove excess that can be see from the outside of the box, as excess squeeze out that occurs on the inside of the box will not be seen. ) Remove the protective film from the side that will be touching the silicone and align piece with the pre drilled holes pressing it into the silicone bead. Secure with supplied or recommended wood screws.