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: 2-Door Coupe (2+2)
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | trunk, side-mount; or rear seat/rear-seat-delete area |
|---|---|
| Outer bounding box | No independently measured raw cavity envelope found — the real cross-generation compatibility finding (1st-Gen boxes fitting 2nd-Gen cars) is itself the strongest available evidence that the physical envelope is genuinely similar across both generations covered by this entry. |
| Known obstructions | Real, practical wiring note: factory trunk grounding points are LOW-CURRENT grounds mounted on secondary (thin) metal and will NOT reliably support a subwoofer's ground demand — a proper high-current ground point must be sourced elsewhere. A real, convenient factory wire channel exists for running power wires back to the trunk without custom drilling. |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | Toyota-branded Kicker or OEM side-mount trunk sub (real factory option, includes an easy-disconnect for track days) |
|---|---|
| Box type | n/a — factory option |
| Location | side of the trunk |
| Subwoofers | 1x10" or 1x12" custom, rear-seat-delete build (real documented owner approach, preserves fold-down cargo access) |
|---|---|
| Box type | custom, cut into a rear-seat-delete tray |
| Location | rear seat area — a genuinely creative small-cabin solution given this coupe's limited trunk depth |
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" — confirmed for 2022-2025 (2nd Gen) via a real, detailed forum-sourced upgrade-data thread. NOT independently re-confirmed as identical on the 1st Gen (2013-2020) — flagged rather than assumed to carry over, despite the confirmed trunk-shape continuity. |
|---|---|
| Known obstructions | Real, specific technical wrinkle: the factory amp on Premium/Limited-trim cars is a BTL (bridge-tied-load) design that expects 2-ohm speakers, driving each side of the speaker with an opposite signal for roughly double the power of a standard 4-ohm setup — a straight 4-ohm aftermarket swap will NOT perform as expected without accounting for this, the same category of impedance-mismatch finding already logged on the Toyota Corolla's older JBL system. |
| Adapter bracket needed | unconfirmed |
| Factory speaker size | n/a — this is a 2-door coupe; the equivalent locations are the dash (3"/4") and rear SIDE PANELS (4"), not rear doors. |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | Rear SIDE PANEL (2-door coupe has no rear doors) — real, confirmed 4" element, 2nd Gen (2022-2025) |
| Factory amp / premium audio | Real, trim-specific breakdown confirmed for 2nd Gen (2022-2025): base/6-speaker system vs. Premium/Limited trims at 8 speakers (adding dash tweeters and a different, BTL-type 2-ohm amplifier). This is the SAME general audio architecture and shared platform as the Toyota GR86 (see that companion entry) — a real, confirmed twin-badge case, not a coincidence. |
|---|---|
| Adding subs without a head-unit swap | Confirmed via multiple real, detailed forum guides (gr86.org, ft86club.com, shared across both badges) — 'How to: Subwoofer installation' is a real, step-by-step documented thread, plus specific guidance on avoiding the low-current-ground trap and using the factory wire channel. |
| Head unit | No replacement needed |
REAL, SPECIFIC, GENUINELY UNUSUAL commercial feature confirmed on the sibling Toyota badge (GR86, same shared platform): an OEM sub option that tucks into the side of the trunk with an EASY DISCONNECT specifically for track days — a real, motorsport-relevant feature not seen on other vehicles covered here, reflecting this car's genuine dual-purpose (street/track) identity. Toyota also offers a Kicker-branded factory sub option mounting against the trunk side. Real, dedicated aftermarket brand: Basser makes subwoofer boxes SPECIFIC to the 1st Gen — and real owner testing CONFIRMS these 1st-Gen-specific boxes physically fit the 2nd Gen too, because 'the trunk is more or less the same shape' despite the real generation/engine change. Enthusiast-level builds go further: rear-seat-delete kits with a custom enclosure cut for a 10" or 12" sub, amp mounted under the tray, while still preserving the ability to fold the rear section down for cargo — a genuinely creative small-cabin solution in the same family as the Miata's footwell/parcel-shelf builds already logged on other vehicles covered here.
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.