Brake Drum
| 9 Inch Drum | Standard Inside Diameter | 9.000 Inch (in) |
| Maximum Inside Diameter | 9.079 Inch (in) | |
| 8 3/4 Inch Drum | Standard Inside Diameter | 7.874 Inch (in) |
| Maximum Inside Diameter | 7.913 Inch (in) |
| 9 Inch Drum | Standard Inside Diameter | 9.000 Inch (in) |
| Maximum Inside Diameter | 9.079 Inch (in) | |
| 8 3/4 Inch Drum | Standard Inside Diameter | 7.874 Inch (in) |
| Maximum Inside Diameter | 7.913 Inch (in) |