| Model | Horsepower | Year(s) |
|---|---|---|
| RKL-24 | 40 | 1962 |
| RKL-25 | 40 | 1963 |
| RKL-26 | 40 | 1964 |
| RKL-27 | 40 | 1965 |
| RKL-28 | 40 | 1966 |
| RKL-29 | 40 | 1967 |
| RKL-30 | 40 | 1968 |
| RX-10 | 28 | 1962 |
| RX-11 | 28 | 1963 |
| RX-12 | 28 | 1964 |
| RX-13 | 33 | 1965 |
| RX-14 | 33 | 1966 |
| RX-15 | 33 | 1967 |
| RX-16 | 33 | 1968 |
| RXE-11 | 28 | 1963 |
| RXE-12 | 28 | 1964 |
| RXE-13 | 33 | 1965 |
| RXE-14 | 33 | 1966 |
| RXE-15 | 33 | 1967 |
| RXE-16 | 33 | 1968 |