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Lexus T24A-FTS specs: 2.4L (146 ci) 4-cylinder, 87.5 x 99.5 mm (3.4449 x 3.9173 in) bore and stroke. Rated 275-366 hp, 2023–2026. Used in the Lexus RX. DOHC.
The Lexus T24A-FTS is undersquare — the 3.9173" stroke exceeds the 3.4449" bore by 12.1% — a layout that trades peak RPM for leverage and torque low in the range. The 3.9173" stroke puts mean piston speed at 4,000 ft/min around 6,150 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 36.5 ci (598 cc).
It is one of 14 engines in the Dynamic Force family, sitting between the 121.9 ci and 210 ci members. 8 factory variants share these dimensions, rated from 275 to 366 hp across 2023–2026.
| Displacement | 146 ci / 2.4 L |
|---|---|
| Bore | 3.4449" |
| Stroke | 3.9173" |
| Cylinders | 4 |
| Configuration | I4 |
| Bore/stroke ratio | 0.879 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 275–366 hp |
| Years | 2023–2026 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2023 | T24A-FTS net | 275 | — | — |
| 2023 | T24A-FTS net | 366 | — | — |
| 2024 | T24A-FTS net | 275 | — | — |
| 2024 | T24A-FTS net | 366 | — | — |
| 2025 | T24A-FTS net | 275 | — | — |
| 2025 | T24A-FTS net | 366 | — | — |
Factory specification sheet.
| Bore/stroke character | 0.879 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,917 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 36.5 ci |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 2023 | 275 hp | T24A-FTS |
| 2023 | 366 hp | T24A-FTS |
| 2024 | 275 hp | T24A-FTS |
| 2024 | 366 hp | T24A-FTS |
| 2025 | 275 hp | T24A-FTS |
| 2025 | 366 hp | T24A-FTS |
| 2026 | 275 hp | T24A-FTS |
| 2026 | 366 hp | T24A-FTS |
5 factory vehicles, 2023–2026. Each year opens that model's engine table.