Listed gear-ratio data for 2026 Mercury 300 HP FourStroke / Verado V8 outboards. Match your exact model and lower unit; some models may have more than one gearcase configuration.
2026 Mercury 300 HP FourStroke / Verado V8
Listed ratio values: 1.75:1, 1.85:1
| Model | Gear ratio |
|---|---|
| AVAILABLE-GEARCASES | 1.75:1, 1.85:1 |
Use the ratio that matches your exact outboard model and lower unit, then enter it in the PropSlip calculator.