Kia 122ci specs: 86 x 86 mm (3.3858 x 3.3858 in) bore and stroke, shared by all 2 versions. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 121.9–122 ci |
|---|---|
| Cylinders | 4 |
| Bore | 3.386" |
| Stroke | 3.386" |
| Compression | 9.5–10.0:1 |
| Advertised power | 245–274 hp |
| Years | 2011–2021 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Theta II G4KL | 122 ci | 3.3858" × 3.3858" | 10:1 | 255 |
| G4KH | 121.9 ci | 3.3858" × 3.3858" | 9.5:1 | 245–274 |
Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.