Renault Master rear leaf spring uprates and heavy duty springs.
| Owen Springs Part No. | Description | Application | Year | Owen Springs U Bolt |
| PVXR022-2 | Reinforcement Leaf | Renault Master | 1998 to 2010 | UB184 |
| PRER140-REIN | Reinforcement Leaf | Renault Master | 2010 on | UB285 |
| PVXR024 | Heavy Duty 2 Leaf Spring | Renault Master | 1998 to 2010 | UB184 |
| PRER155 | Heavy Duty 2 Leaf Spring | Renault Master | 2010 on | UB285 |