| MODEL | FC-150 48" Tread | FC-150 57" Tread | FC-170 | FC-170 With Dual Rear Wheels |
| Make | Spicer | Spicer | Spicer | Spicer |
| Model | 44 | 44-1 | 53 | 70 |
| Capacity | 3000 lb. {1360 kg} | 3500 lb {1587 kg} | 4500 lb {2041 kg} | 7500 lb {3401 kg} |
| Description | semifloating Hypoid Gears | semifloating Hypoid Gears | Semifloating Hypoid Gears | Semifloating Hypoid Gears |
| Drive Pinion Offset | 1.50" | 1.50" | 1.75" | 1.12" |
| Number of Differential Pinions | 2 | 2 | 2 | 4 |
| Gear Ratio Standard | 5.38:1 | 5.38:1 | 4.88:1 | 4.88:1 |
| Gear Ratio Optional | 4.27:1 | 5.87:1 | ||
| Gear Ratio Optional | 5.38:1 | |||
| Ring Gear Pitch Diameter | 8.5" | 8.5" | 9.25" | 10.5" |
| Pinion Adjustment | Shim | Shim | Shim | Shim |
| Pinion Bearing Adjustment | Shim | Shim | Shim | Shim |