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 Crossover, 2-row and 3-row
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | right rear side panel (factory) or behind rear seat/trunk wall (compact custom) |
|---|---|
| Outer bounding box | 0.75-1.0 ft3 for a 10" compact sealed build without cargo sacrifice. |
| Known obstructions | None specifically documented beyond the factory enclosure's own footprint. |
| Usable volume estimate | 0.875 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | keep/replace the factory 10" DVC unit in the reusable right-rear-side-panel enclosure |
|---|---|
| Box type | n/a — factory enclosure reuse |
| Location | right rear side panel |
| Subwoofers | 1x10" sealed, 0.75-1.0 ft3, behind rear seat or trunk wall (no cargo sacrifice) |
|---|---|
| Box type | sealed, custom |
| Location | behind rear seat or trunk wall |
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 | 6-3/4" woofer plus a 1.5" tweeter — specific component-speaker setup confirmed on BOTH the base AND Rockford Fosgate systems (not a Rockford-exclusive feature), requiring door-panel removal to access. |
|---|---|
| Known obstructions | Specific labor note: full system integration (not just the sub) averages 6-8 hours of labor — a genuinely useful real-world time estimate for anyone planning a complete build rather than a quick swap. |
| Adapter bracket needed | possibly, depending on chosen replacement — some subs require drilling new screw holes or fabricating a bracket |
| Tweeter | SAIL-PANEL mounted (upper corner of the front door, near the mirror), NOT recessed in the main door panel — confirmed, wired in parallel with the door woofer. Accessed by prying off the sail panel and releasing a retaining clip, then removing 2 Phillips screws. Same brand-wide convention independently confirmed on the 4th Gen Outlander and Outlander Sport pages. |
| Midrange | n/a — 2-way component set (woofer + sail-panel tweeter), no separate midrange confirmed |
| Factory speaker size | 6.5" coaxial on Rockford Fosgate-equipped cars (Rockford's OEM page for the "2014-Current" Outlander, which does not say door or rear panel). The base system's rear size was not found. |
|---|---|
| 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 premium system (available trims): 10" DVC subwoofer in a reusable right-rear-side-panel enclosure, plus the same 6-3/4"+1.5" component front-door layout as the base system. Rockford Fosgate's own OEM page for the "2014-Current" Outlander: 710 watts, 9 speakers, 8 channels, 6.5" front speakers, a 1" soft-dome front tweeter, 6.5" coaxial rear speakers and a 10" dual-voice-coil subwoofer. Rockford's 6.5" and 1" are its nominal labels; the 6-3/4" woofer and 1.539" tweeter above are owner-sourced. |
|---|---|
| Adding subs without a head-unit swap | Confirmed via a current, specifically-titled '2016-2021 Mitsubishi Outlander Amp and Sub Install' YouTube tutorial covering this exact generation's full process. |
| Head unit | No replacement needed |
Specific, factory-confirmed finding: Rockford Fosgate-equipped trims have a 10" dual voice coil subwoofer mounted in an enclosure in the RIGHT rear side panel — and sourcing confirms this factory enclosure CAN BE REUSED for a new/replacement subwoofer, a genuine parts-bin-friendly path. Specific compact-build guidance: a 10" sub in a 0.75-1.0 ft3 sealed enclosure fits neatly behind the rear seat or along the trunk wall WITHOUT sacrificing cargo space, while a 12" needs more room and does start to limit utility — a deliberate size/cargo tradeoff.
RESOLVED 2026-07-19: this generation's PHEV has the SAME confirmed packaging cost already established on the 4th Gen (2022-2025) Outlander file in this catalogue — no spare tire (a repair kit is provided instead, explicitly to save cargo space/weight for efficiency), no 3rd-row (6th/7th) seating option (Mitsubishi removed it specifically to make room for battery/drivetrain components), and the electric motor/motor controller/battery pack sit under the rear cargo area. A practical owner workaround exists: the rear cargo floor can be lifted, with a hinged hatch covering about half the space nearest the door and a removable section near the back seat — most owners needing a spare use an aftermarket donut/space-saver rather than expecting Mitsubishi to provide one. Treat PHEV trims of THIS generation the same as the 4th Gen file's PHEV exclusion — this is confirmed, not assumed.
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.