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 SUV, 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 | cargo area, down-firing, spare-tire-drop-point-accessible |
|---|---|
| Outer bounding box | Box sits ~0.5" taller than the rear seats when folded flat; takes about half the cargo space |
| Known obstructions | Must remain removable and keep the spare tire drop point accessible — real family-use durability requirement, not just a volume figure |
| Usable volume estimate | 1.5 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | 1x8" or 1x10" shallow-mount, down-firing |
|---|---|
| Box type | sealed |
| Location | cargo area, spare-tire-drop-point-accessible |
| Subwoofers | 1x10" or 1x12" prefab (e.g. JL Audio), removable |
|---|---|
| Box type | sealed |
| Location | cargo area, secured with an L-bracket, removable for big-haul days |
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 | 6.75" |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | n/a in the front doors — Harman Kardon trims (10-speaker/630W, or a 12-speaker/11-channel variant) DO have a front tweeter, but could not resolve WHERE — owner forum discussion shows genuine uncertainty/hope among owners themselves about whether it's dash-mounted (firing at the windshield) or A-pillar-mounted, meaning even the community hasn't settled this. A separate center-dash speaker (below the window, above center dash) is confirmed distinct from this front tweeter. |
| Factory speaker size | 6.75" (same as front) |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | Rear door-mounted (both left and right) — confirmed on HK trims. Exact diameter not confirmed. |
| Factory amp / premium audio | Harman Kardon premium audio "with 10 speakers (including subwoofer and external amplifier)" is listed on the SX and above (SX, SX X-Line, SX X-Pro and the SX Prestige variants) on Kia's own 2020, 2021, 2023 and 2024 features pages; LX, S, EX and EX X-Line list "6 speakers including 2 tweeter speakers". Kia's 2024 features page does not tie Harman Kardon to the EX in any line or package. A package or late running change not on that page is possible but unconfirmed. |
|---|---|
| Adding subs without a head-unit swap | Confirmed straightforward — documented build taps the rear speaker wires at the pillar next to the front seats via a line-out converter, doesn't touch the head unit |
| Head unit | No replacement needed |
Documented build: box sits about 1/2" taller than the rear seats when folded flat, down-firing design with real clearance underneath for the shallow sub to move (not flush-mounted against the floor). Takes a little over half the cargo space but explicitly still allows access to the spare tire drop point — a deliberate design tradeoff, not an accident. An 'L' bracket is used to secure the box against sliding during driving. PRACTICAL DURABILITY NOTE, genuinely relevant for a family 3-row SUV: prefab options (JL Audio named specifically) are noted as durable enough to 'take a beating from strollers' and other family cargo, and are removable for big-haul days — a real family-use-case consideration distinct from pure audio performance.
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.