Twin Power Unit to Accelerator Valve Upgrade
| Upgrade | Description |
| ATT-Valve | Upgrade Standard Simo To Accelerator (Valve Only) |
| Twin To TwinSP | Upgrade Standard Simo to Super Simo (Super Charger Only) |
| Twin to ATTSP | Upgrade Standard Simo To Super Accelerator (Valve and Super Charger) |
| ATT to ATTSP | Standard Accelerator to Super Accelerator (Super Charger Only) |