| Rear ratio's | |||
| Pinion gear teeth | Ring Gear teeth | Ratio | Notes |
| Current: | |||
| 8 | 41 | 5.125 | Aftermarket |
| 8 | 37 | 4.625 | NZ Kia Sportage 4x4 |
| 9 | 43 | 4.778 | US Kia Sportage 4x4 |
| 9 | 40 | 4.44 | Truck |
| 10 | 41 | 4.1 | 94-97 Miata and 99+ automatic Miata |
| 10 | 43 | 4.3 | 99 Miata stick |
| 11 | 40 | 3.636 | 2001+ Australian 6-speed |
| 11 | 43 | 3.909 | Miata 6-speed, RX-7 automatic, 79-83 RX-7 all |
| legacy: | |||
| 9 | 37 | 4.11 | 616 |
| 10 | 37 | 3.7 | 808/72-75 RX-3 |
| 11 | 40 | 3.636 | RWD 626 |
| 11 | 41 | 3.727 | 76+ RX-3 |
| 12 | 49 | 4.083 | Late 84-85 GSL-SE |
| 13 | 53 | 4.077 | Early 84 GSL-SE |
| 15 | 59 | 3.933 | 84 12a RX-7 |
| 13 | 43 | 3.308 | 82-84 B2000/Courier Diesel |