2003 Honda Civic Si Hatchback
Transmission gear ratios, final drive data, and drivetrain specs for the 2003 Honda Civic Si Hatchback.
US specification / EP3
American Honda factory factsheet preserved by XR793. US Si uses the K20A3; this is not the Japanese or European Type R engine. Redline verification pending.
Sources & engine identity
- Honda 2003 Civic specificationsgear ratios, reverse, final drive, tires
Stock manual / 5-speed / transmission source
Transmission gear ratios
| Gear | Ratio | Overall | Step |
|---|---|---|---|
| 1 | 3.062 | 14.587 | - |
| 2 | 1.769 | 8.428 | 1.731 |
| 3 | 1.212 | 5.774 | 1.460 |
| 4 | 0.921 | 4.388 | 1.316 |
| 5 | 0.738 | 3.516 | 1.248 |
| R | 3.583 | 17.069 | - |
Overall = gear ratio × final drive. Step = previous ratio ÷ current ratio.
Final Drive: 4.764Overall Spread: 4.149