| Number | Name | Brand | Fit |
|---|
| 53974 | TRF501X Setting Spring Set (Front) | Tamiya | direct |
| 53975 | TRF501X Setting Spring Set (Rear) | Tamiya | direct |
| 54506 | Big Bore Aeration Damper Front Spring Set (4WD) | Tamiya | direct |
| 54508 | Big Bore Aeration Damper Rear Spring Set | Tamiya | direct |