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: Regular Cab, SuperCab, SuperCrew
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | underseat, SuperCrew — real confirmed factory B&O subwoofer bay in this generation (Goose Gear sells a seat-delete product specifically with a 'Factory B&O Subwoofer Center Wall with Exterior Port') |
|---|---|
| Outer bounding box | Max height 6.5" (real forum-confirmed ceiling to avoid lifting the seat) — width/depth not independently measured beyond the above-platform 28"Wx18"Dx22"H Goose Gear spec, which describes cooler/fridge storage space, not necessarily the full underseat sub cavity |
| Known obstructions | Factory B&O subwoofer bay itself is a real obstruction/anchor point on B&O-equipped trims — a custom box on those trims needs to work around or replace it, not just fit generic underseat space |
| Usable volume estimate | 1 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | 1x10" or 1x12" thin-mount, sealed |
|---|---|
| Box type | sealed |
| Location | under rear seat, max 6.5" height |
| Subwoofers | 1x12" ported or dual smaller thin-mount |
|---|---|
| Box type | ported |
| Location | under rear seat, max 6.5" height |
Sizes and depths below are what research turned up for this generation. Confirm against your own vehicle before cutting or ordering — trim levels vary.
| Factory speaker size | 6x9" (non-B&O standard system) |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | A-pillar (dash-adjacent), not the door itself. Installing a larger aftermarket tweeter requires cutting/fabrication since the factory location is genuinely small. |
| Factory speaker size | 6.5" (confirmed via a real Crutchfield install using JL Audio C2-650x 6.5" 2-way in the rear doors) |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | n/a — tweeter is front A-pillar only |
| Factory amp / premium audio | REAL CORRECTION, 2026-07-22: this entry previously implied the Sony-to-B&O premium-audio switch happened at THIS generation's start (~2021), and separately, an earlier draft of's note called the predecessor 'Bose.' Direct research found both are wrong: the predecessor system was Sony (matching the sibling 2009-2014 and 2015-2020 F-150 entries, not Bose), AND Ford's B&O system actually launched with the 2018 model year — the FIRST Ford vehicle in the US with B&O PLAY, developed with Harman — meaning it landed inside the 2015-2020 entry's own year range, not at this entry's 2021 start. That companion entry's 'Sony. pre-dates the Bang & Olufsen switch' framing needs a caveat: 2018-2020 model years within ITS OWN range may already be B&O-equipped on upper trims (Lariat+ optional, King Ranch/Platinum/Limited standard by 2019-2020), not purely Sony-era. This generation (2021-2024) continues the B&O system, real, confirmed product split: SGS sells one package for the 'non-amplified system' and a separate one specifically for 'B&O SuperCrew' — confirms the B&O system needs different wiring/integration than the base system. |
|---|---|
| Adding subs without a head-unit swap | Confirmed straightforward on base (non-amplified) trims — SGS explicitly markets a plug-and-play option that 'doesn't require signal stealing from the factory amp' for this generation. B&O trims need the B&O-specific product/adapter. |
| Head unit | No replacement needed |
Real design constraint confirmed by forum builders: downfiring underseat boxes are capped around 6.5" max height to avoid lifting the seat. Commercial options exist at multiple tiers — SGS sells a quad 6.5" underseat package plus a B&O-compatible package (non-amplified vs. B&O system needs different products); SubThump makes fully custom enclosures for this cab specifically.
Outside links. Some are commercial products, some are owner builds posted on forums — the label says which. We do not endorse any of them.
Each link opens the tool with this vehicle already selected.
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.