Listed gear-ratio data for 2022 Yamaha 25 HP outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
2022 Yamaha 25 HP
Listed ratio values: 2.08:1, 2.42:1
| Model | Gear ratio |
|---|---|
| F25LC | 2.08:1 |
| F25LMHC | 2.08:1 |
| F25LWC | 2.08:1 |
| F25LWHC | 2.08:1 |
| F25LWTC | 2.08:1 |
| F25SMHC | 2.08:1 |
| F25SWC | 2.08:1 |
| F25SWHC | 2.08:1 |
| T25LWTC | 2.42:1 |
| T25XWTC | 2.42:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.