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: Double Cab, CrewMax
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, Double Cab |
|---|---|
| Outer bounding box | No independently measured cavity found. Published box footprints are lower bounds on the cavity, not the cavity (axes as printed): NET Audio 2007-13 Double Cab Downfire Dual 50 x 19 x 8 in (1.52 ft3), Single 30 x 19 x 8 in (1.0 ft3), Single Passenger Side 20 x 17.25 x 8 in (0.5 ft3, in front of the floor jack); Ground Shaker 07-21 Double Cab 10" dual sealed Height 5 1/4", Length 49 1/4", Depth 15 1/4" (labelled by Ground Shaker; 1.32 cu ft); Super Crew Sound 2007-2023 Dual UTS 20" deep x 30" wide (1.20 ft3); SRQ Customs 2007-2021 Extended Cab 32 x 32 x 12 in (1.2 ft3); TacoTunes 2007-2021 Double Cab ported 54 x 8 x 22 in (2.12 ft3, needs the under-seat storage removed). |
| Known obstructions | NET Audio: single passenger-side box sits 'in front of floor jack' and fits shallow-mount subs only; the driver-side single box leaves 'space in front of the floor jack open for storage or amp mounting'. Ground Shaker: 'Will not fit crew-max'. Factory JBL subwoofer location not stated by Toyota; Sound Off says its Double Cab box is 'Not applicable for factory subwoofers'. |
| Location | behind the rear seat, CrewMax |
|---|---|
| Outer bounding box | No independently measured cavity found. Published box footprints are lower bounds on the cavity, not the cavity (axes as printed unless labelled): NET Audio 2007-2010 CrewMax 46 x 8 x 17 in (1.89 ft3) and 2011-2013 CrewMax 47 x 9 x 16.5 in (2.19 ft3); Ground Shaker 07-13 CrewMax 10" dual sealed Height 16 3/4", Length 45 1/4", Top Depth 5 1/4", Bottom Depth 8 1/4" (labelled by Ground Shaker; 1.96 ft3); Super Crew Sound 2007-2013 CrewMax 16" tall and 32" wide (1.30 ft3); TacoTunes 2007-2021 CrewMax dual 12 ported 54 x 8 x 23 in (2.12 ft3). |
| Known obstructions | Super Crew Sound, Zenclosures: will not fit a truck with the factory subwoofer system. NET Audio splits 2007-2010 and 2011-2013 boxes ('2011-up models require different box'). TacoTunes: box spans over 53 inches and needs minor plastic trimming. |
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 | Toyota prints speaker counts, not sizes. TacoTunes sells 2007-2021 front-door kits in 6x9 in and 6.5/6.75 in (kit sizes, not proof of factory size). |
|---|---|
| Adapter bracket needed | unconfirmed |
| Factory speaker size | TacoTunes sells 2007-2021 rear-door 6.5/6.75 in adapter kits (kit size, not proof of factory size) |
|---|---|
| Adapter bracket needed | unconfirmed |
| Factory amp / premium audio | Toyota eBrochures. 2013 and 2012: standard 'AM/FM CD player ... six speakers (four in Regular Cab)'; 'JBL AM/FM 6-disc CD changer ... 12 speakers including subwoofer (ten on Double Cab)' standard on the Double Cab and CrewMax Limited, JBL 4-disc navigation optional on both Limiteds and standard on CrewMax Platinum. 2008: Double Cab JBL '10 speakers including subwoofer, 440W amplifier'; CrewMax JBL '12 speakers including subwoofer, 440W amplifier'; navigation unit '12 speakers, 440W-peak-output amplifier'. A factory subwoofer exists on JBL trucks; Toyota does not say where it is mounted, and the 2008 Double Cab 'Rear under-seat storage box' is 'not available with JBL audio'. Super Crew Sound and Zenclosures say their CrewMax box will not fit a truck with the factory subwoofer system. 2008 trim columns were not parsed. |
|---|---|
| Adding subs without a head-unit swap | not documented in a source read |
Toyota 2013 eBrochure: Double Cab rear leg room 34.7 in, rear hip room 62.6 in, rear shoulder room 65.7 in, rear head room 38.7 in. Boxes under the rear seat are shallow: NET Audio 4 1/4 in mounting depth (5 in with metal back plates), Ground Shaker 4 3/4-5 in, Super Crew Sound 5 in. Toyota lists 'Rear under-seat storage box (not available with JBL audio)' on the 2008 Double Cab. Not box dimensions.
Toyota 2013 eBrochure: CrewMax rear leg room 44.5 in, rear hip room 62.6 in, rear shoulder room 65.4 in, rear head room 38.7 in. Boxes sit behind the rear seat: 5.5-6.625 in mounting depth across NET, Ground Shaker, Super Crew Sound, Sound Off and Zenclosures. Super Crew Sound and Zenclosures say their box will not fit a truck with the factory subwoofer system. Not box dimensions.
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.