| Number | Name | Brand | Fit |
|---|
| 51547 | TB-04 One-Way/Gear Differential Unit Ring Gear Set (40T) | Tamiya | direct |
| 51549 | TB-04 Gear Differential Unit Bevel Gear Set | Tamiya | direct |
| 51554 | TB-04 Gear Differential Unit Cup Joint Set | Tamiya | direct |
| 54540 | Steel Bevel Gears for TB-04 Gear Differential Unit | Tamiya | direct |
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