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B3 Customs

Custom Sub Box

Custom Sub Box

$400.00
$400.00
Sale Sold out
Shipping calculated at checkout.

Our vehicle specific, Custom Sub Boxes will allow you to optimize your once wasted space above the wheel wells to provide the ultimate sound system!

Typically ships in 2-5 weeks.

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CUSTOM FIT

Custom fabricated to your exact cab and cargo dimensions. No rattling, no shifting, just a clean install that looks like it came from the factory.

ENGINEERED SOUND

Engineered for the acoustics of truck and SUV interiors, so you get full, punchy sound whether you're cruising the highway or crawling through the backcountry.

BUILT TOUGH

Heavy-duty materials that can handle the vibration, heat, and punishment of offroad driving.

B3 SEAT DELETE ENCLOSURES

NEED MORE STORAGE?

Our Drawer Systems and Seat Delete Enclosures are designed to pair seamlessly to add a ton more storage if passenger room isn't priority

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Light Kits

LIGHT WHERE YOU NEED IT

Bring your interior to life with B3 Custom light kits designed to highlight every detail of your build. Clean, seamless, and easy to integrate, these kits add the perfect glow without overpowering the space—because the right lighting makes all the difference.

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Carpet Colors

  • Black

  • Grey

  • Tan

FREQUENTLY ASKED QUESTIONS

WHAT ARE THE EXACT SPECS?

Check out our specs page to find your exact vehicle

WHAT VEHICLES DO THEY FIT?

Each Sub Box is designed differently, specific for each vehicle/ sub model, guaranteeing a perfect fit. 

In case we don't offer a system for your exact vehicle quite yet, no worries! Contact us in order to schedule a custom build!

ARE THEY SEALED OR PORTED?

Our Sub Boxes are sealed

ORDER PROCESS

WHAT HAPPENS AFTER I PLACE MY ORDER?

We will get your order sheet in queue and start production on it according to your specific selections and customizations

CAN I GET THE DRAWER SYSTEM AND SUB BOX SEPARATELY?

Definitely! Just about every single one of our products are made to be compatible, meaning we can always add any custom cutouts or designs for your needs.

The Drawer Systems need to have a custom cutout to house the Sub Box

INSTALLATION

HOW LONG DOES IT TAKE?

Each of our Sub Boxes incorporate custom mounting brackets to tie into factory bolt holes, which allows for a simple 5-10 minute install 

DO YOU OFFER INSTALLS IF I SELECT LOCAL PICK UPS?

Yes! We offer free local install at our shop in Oceanside, CA

CAN I INSTALL MYSELF?

Absolutely, our Sub Boxes are shipped fully assembled, with a vehicle specific install video, ready for a simple 5-10 minute installation

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