Listed gear-ratio data for 1998 Evinrude 90 HP outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
1998 Evinrude 90 HP
Listed ratio values: 2.00:1
| Model | Gear ratio |
|---|---|
| 90 FICHT / Direct Injection | 2.00:1 |
| 90 HP V4 2-Stroke | 2.00:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.