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Porsche MA2.22 specs: 2.5L (152.4 ci) 4-cylinder, 102 x 76.4 mm (4.0157 x 3.0079 in) bore and stroke, 9.5:1 compression. Rated 350-365 hp, 2017–2025.
The Porsche MA2.22 is oversquare — the 4.0157" bore exceeds the 3.0079" stroke by 33.5% — a layout that favors airflow and RPM over leverage at the crank. The 3.0079" stroke does not reach 4,000 ft/min of mean piston speed until about 8,000 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 38.1 ci (624 cc).
9.5:1 is in the range that usually runs on pump premium.
It is one of 9 engines in the 9A2 Evo family, sitting between the 121.3 ci and 243.9 ci members. 11 factory variants share these dimensions, rated from 350 to 365 hp across 2017–2025.
| Displacement | 152.4 ci / 2.5 L |
|---|---|
| Bore | 4.0157" |
| Stroke | 3.0079" |
| Cylinders | 4 |
| Compression ratio | 9.5:1 |
| Bore/stroke ratio | 1.335 |
| Fuel type | gas |
|---|---|
| Advertised HP | 350–365 hp |
| Years | 2017–2025 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2017 | MA2.22 net | 350 @ 6500 | 309 lb-ft @ 1900-4500 | 9.5:1 |
| 2018 | MA2.22 net | 350 @ 6500 | 309 lb-ft @ 1900-4500 | 9.5:1 |
| 2018 | MA2.22 net | 365 @ 6500 | 309 lb-ft @ 1900-5500 | 9.5:1 |
| 2019 | MA2.22 net | 350 @ 6500 | 309 lb-ft @ 1900-4500 | 9.5:1 |
| 2019 | MA2.22 net | 365 @ 6500 | 309 lb-ft @ 1900-5500 | 9.5:1 |
| 2020 | MA2.22 net | 350 @ 6500 | 309 lb-ft @ 1900-4500 | 9.5:1 |
| 2021 | MA2.22 net | 350 @ 6500 | 309 lb-ft @ 1900-4500 | 9.5:1 |
| 2022 | MA2.22 net | 350 @ 6500 | 309 lb-ft @ 1900-4500 | 9.5:1 |
| 2023 | MA2.22 net | 350 @ 6500 | 309 lb-ft @ 1900-4500 | 9.5:1 |
| 2024 | MA2.22 net | 350 @ 6500 | 309 lb-ft @ 1900-4500 | 9.5:1 |
| 2025 | MA2.22 net | 350 @ 6500 | 309 lb-ft @ 1900-4500 | 9.5:1 |
Factory specification sheet.
| Bore/stroke character | 1.335 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,008 ft/min — conservative for a street engine |
| Displacement per cylinder | 38.1 ci |
| Static compression | 9.5:1 — in the range that usually runs on pump premium |
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 |
|---|---|---|
| 2017 | 350 hp | MA2.22 |
| 2018 | 350 hp | MA2.22 |
| 2018 | 365 hp | MA2.22 |
| 2019 | 350 hp | MA2.22 |
| 2019 | 365 hp | MA2.22 |
| 2020 | 350 hp | MA2.22 |
| 2021 | 350 hp | MA2.22 |
| 2022 | 350 hp | MA2.22 |
| 2023 | 350 hp | MA2.22 |
| 2024 | 350 hp | MA2.22 |
| 2025 | 350 hp | MA2.22 |
1 factory vehicle, 2017–2025. Each year opens that model's engine table.