2021-2024 Ford Bronco 6th Gen (new Bronco) — subwoofer box fitment

What we researched for this specific generation: where an enclosure actually fits, what the factory speakers are, how the factory audio is wired, and which real builds and commercial products exist for it. Confidence badges say how well each figure is sourced — this is research, not manufacturer spec.

Body styles covered: 2-Door, 4-Door

Where a box actually fits

These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.

Standard Likely

Locationfactory subwoofer location, passenger side cargo panel (promoted from existing notes)
Outer bounding boxAccepts 6.75" (B&O-equipped) or up to 8" (modifiable) driver; stock enclosure ~1.5 ft3 ported
Known obstructionsB&O vs. non-B&O trims have a real, confirmed size difference at this exact location — not a uniform cavity across all trims
Usable volume estimate0.5 ft³

Starting points

Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.

Budget

Subwoofers1x6.75" or 1x8" sealed (direct-fit, factory B&O location)
Box typesealed
Locationfactory subwoofer location, zero cargo loss

Enthusiast

Subwoofers1x8" custom under cargo floor
Box typesealed, ~0.5 ft3
Locationunder cargo floor

Door speaker fitment

Sizes and depths below are what research turned up for this generation. Confirm against your own vehicle before cutting or ordering — trim levels vary.

Front doors Solid

Factory speaker size6.5" — real, confirmed via multiple aftermarket product listings explicitly sized for the factory front door location (DS18 loaded panel package, Down4Sound speaker pods). Real, important trim caution: standard 6-speaker vs. premium 10-speaker B&O systems are NOT interchangeable — verify which system is present before recommending upgrades.
Adapter bracket neededunconfirmed

Rear doors Unconfirmed

Factory speaker sizeunconfirmed (4-Door body style only)
Adapter bracket neededunconfirmed

Factory audio integration

Factory amp / premium audioBang & Olufsen system confirmed on equipped trims — the factory sub location's exact dimensions differ slightly for B&O vs. non-B&O (6.75" vs. up to 8"). Real, confirmed dash-mounted tweeter+midrange pair (10mm + 80mm) per side on the B&O system.
Adding subs without a head-unit swapConfirmed straightforward — multiple direct-fit factory-location products exist without needing to touch the head unit
Head unitNo replacement needed

Known integration products

Mounting locations

Standard Likely

Real, specific factory-location data: stock location accepts a 6.75" or 8" driver (B&O-equipped models fit ~7.5", modifiable to 8"). Stock enclosure is ported, ~1.5 ft3, port at the back. Direct-fit aftermarket options exist specifically for this factory location — an 8" round Kicker-ready enclosure preserving factory look, and a sealed alternative at ~0.4 ft3 internal for tighter, more accurate bass. DIY custom option: Dayton Audio 8", ~0.5 ft3 under the cargo floor, amp mounted under passenger rear seat storage.

Builds and products found for this vehicle

Outside links. Some are commercial products, some are owner builds posted on forums — the label says which. We do not endorse any of them.

Build it for this vehicle

Each link opens the tool with this vehicle already selected.

Before you cut anything

Measure your own vehicle. Trim levels, factory subwoofer options, and mid-generation changes all move these numbers, and a box cut to a researched figure that does not match your truck is wasted wood. Where a badge reads Unconfirmed, treat the value as a starting point for your own measurement, not as an answer.