Brake Drum
| Brake Drum Inside Diameter (Except Heavy Duty Models) | 9.000 Inch (in) |
| Brake Drum Inside Diameter (Heavy Duty Models) | 10.000 Inch (in) |
| Brake Drum Boring Limit Maximum (Except Heavy Duty Models) [1] | 9.060 Inch (in) |
| Brake Drum Boring Limit Maximum (Heavy Duty Models) | 10.060 Inch (in) |
| Maximum Runout | 0.007 Inch (in) |