Here is a table of some of the most common KTM 50cc models and the recommended oil:
| Model | Year | Oil |
|---|---|---|
| 50 SX | 2019-Present | 10W-40 fully synthetic |
| 50 SX Pro | 2020-Present | 10W-40 fully synthetic |
| 50 SX Factory Edition | 2021-Present | 10W-40 fully synthetic |
| 50 XC-W | 2020-Present | 10W-40 fully synthetic |
| 50 XC-W TPI | 2020-Present | 10W-40 fully synthetic |
| 50 SX Mini | 2019-Present | 10W-40 fully synthetic |
| 50 SX Classic | 2020-Present | 10W-40 fully synthetic |
Note: The oil capacity for a 50cc KTM dirt bike is typically around 1 liter (0.26 US gallons).