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: Sport Adventure Vehicle (compact open-bed pickup)
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | under the rear seat |
|---|---|
| Outer bounding box | Published box footprints are lower bounds on the cavity, not the cavity. Ground Shaker (labelled by Ground Shaker): 'BLACK 10" DUAL SEALED SUB BOX, FITS 21-26 HYUNDAI SANTA CRUZ' Height 7 3/4", Length 49 1/2", Depth 11 1/4", 1.26 FT^3 (0.63 per subwoofer), mounting depth 5 1/4", fits under the rear seat, upward firing. |
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 | Hyundai's releases give counts and brand, not sizes; Metra does not cover Hyundai |
|---|---|
| Adapter bracket needed | unconfirmed |
| Adapter bracket needed | unconfirmed |
|---|
| Factory amp / premium audio | Hyundai, April 15 2021 reveal (PR Newswire copy): 'Santa Cruz also offers an eight-speaker Bose Premium sound system' (available option). Trim breakdown and subwoofer not stated there. |
|---|
No maker cargo-volume figure found. Hyundai's April 2021 reveal prints bed length 48.4 in upper / 52.1 in lower and mentions in-cabin storage under the rear seats without a figure. The only measured space is the Ground Shaker under-seat box footprint. Hyundai's pricing release calls it a 'Sport Adventure Vehicle', a compact open-bed vehicle; door count and cab wording are not in the releases read.
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.