| Modello | Altezza libera dal suolo |
|---|---|
| RSC8EX | 152.4 mm - 6 pollice |
| RSC6EX | 127 mm - 5 pollice |
| RR4EX | 50.8 mm - 2 pollice |
| Gregory RSC7EX | 127 mm - 5 pollice |
| Gregory RSC5EX | 127 mm - 5 pollice |
| Gregory RSC4EX | 101.6 mm - 4 pollice |
| Gregory RSC3EX | 101.6 mm - 4 pollice |
| Gregory RR6EX | 50.8 mm - 2 pollice |
| Gregory RR5EX | 50.8 mm - 2 pollice |
| Gregory RR3EX | 50.8 mm - 2 pollice |