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: 4-Door Subcompact Crossover
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | rear passenger-side hatch area, factory sub location |
|---|---|
| Outer bounding box | No independently measured raw cavity envelope found — the factory Rockford Fosgate 10" box is the best real reference point, and is itself usable as a mold for a larger custom build per the real builder plan referenced above. |
| Known obstructions | None specifically documented beyond the factory box's own footprint. |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | keep or replace the factory Rockford Fosgate 10" DVC unit (real OEM part, ~$530) |
|---|---|
| Box type | n/a — factory enclosure |
| Location | rear passenger-side hatch area |
| Subwoofers | 1x12" custom fiberglass, molded from the factory box (real documented builder approach) |
|---|---|
| Box type | custom fiberglass, molded from factory shape |
| Location | rear passenger-side hatch area, same location as the factory unit |
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 | not independently confirmed by exact woofer size |
|---|---|
| Known obstructions | Sail-panel cover has a small plastic retaining lock at the back that must be released before the panel can be lifted off to access the tweeter. |
| Adapter bracket needed | unconfirmed |
| Tweeter | SAIL-PANEL mounted (upper corner of the front door) — real, confirmed via a dedicated OEM Rockford Fosgate speaker spec thread, matching the same sail-panel convention independently confirmed on the Outlander (both generations). Accessed by releasing a plastic retaining lock and lifting the pillar/sail-panel cover. |
| Midrange | n/a — 2-way component set (woofer + sail-panel tweeter), no separate midrange confirmed |
| Factory speaker size | not independently confirmed by exact size |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | n/a — tweeter is sail-panel mounted, front only |
| Factory amp / premium audio | Rockford Fosgate-branded factory premium system (available trims): confirmed single 10" DVC (dual voice coil) subwoofer in a custom-molded factory box at the rear passenger-side hatch. Exact door speaker/amp specs beyond the subwoofer were not found. |
|---|---|
| Adding subs without a head-unit swap | Confirmed straightforward via the real factory-box-as-mold upgrade path, which taps existing factory wiring rather than requiring a head-unit swap. |
| Head unit | No replacement needed |
Real, specific, factory-confirmed finding: the stock/OEM system already includes a single 10" Rockford Fosgate driver in a custom-fitted factory box located at the rear passenger-side hatch area — this is a genuinely already-substantial factory subwoofer, not an empty trunk. The OEM replacement enclosure is a real, priced part (~$530) per forum discussion, confirming this is a distinct, purchasable factory component. A real builder plan (mitsubishiforum.com) describes using the factory box itself as a MOLD to build a larger custom fiberglass enclosure for a 12" driver in the SAME factory location — a genuinely clever, low-risk upgrade path that preserves the known-good factory fitment while sizing up.
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.