| Modèle | Hauteur libre | Vitesse maximale |
|---|---|---|
| RSC8EX | 152.4 mm - 6 pouce | 12.9 km/h - 8 mile / h |
| RSC6EX | 127 mm - 5 pouce | 12.9 km/h - 8 mile / h |
| RR4EX | 50.8 mm - 2 pouce | 7.7 km/h - 4.8 mile / h |
| Gregory RSC7EX | 127 mm - 5 pouce | 11.3 km/h - 7 mile / h |
| Gregory RSC5EX | 127 mm - 5 pouce | 12.9 km/h - 8 mile / h |
| Gregory RSC4EX | 101.6 mm - 4 pouce | 13.5 km/h - 8.4 mile / h |
| Gregory RSC3EX | 101.6 mm - 4 pouce | 14.5 km/h - 9 mile / h |
| Gregory RS6EX | 7.7 km/h - 4.8 mile / h | |
| Gregory RS5EX | 7.7 km/h - 4.8 mile / h | |
| Gregory RS4EX | 7.7 km/h - 4.8 mile / h | |
| Gregory RS3EX | 7.7 km/h - 4.8 mile / h | |
| Gregory RR6EX | 50.8 mm - 2 pouce | 7.7 km/h - 4.8 mile / h |
| Gregory RR5EX | 50.8 mm - 2 pouce | 7.7 km/h - 4.8 mile / h |
| Gregory RR3EX | 50.8 mm - 2 pouce | 7.7 km/h - 4.8 mile / h |
| Gregory RC4EX | 7.7 km/h - 4.8 mile / h | |
| Gregory RC3EX | 7.7 km/h - 4.8 mile / h |