Bore, stroke, displacement and compression for all 2 Lexus 152ci engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 152–152.5 ci |
|---|---|
| Cylinders | 4, 6 |
| Bore | 3.268–3.445" |
| Stroke | 3.031–4.071" |
| Compression | 12.0–14.0:1 |
| Advertised power | 204–304 hp |
| Years | 2006–2026 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 4GR-FSE | 152.5 ci | 3.2677" × 3.0315" | 12:1 | 204 |
| A25A-FXS | 152 ci | 3.4449" × 4.0709" | 14:1 | 215–304 |
Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.
Compression spans 12:1 to 14:1, so fuel requirements differ meaningfully between members — worth checking before assuming parts interchange.
The family mixes oversquare and undersquare designs, so members behave quite differently despite sharing a name.
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.