KTM 50 SX Factory Fork Seals
Fork specs for the KTM 50 SX Factory vary by year (see the table below).Every kit here is verified by the manufacturer to fit this exact bike. Fork seals can share a size and still not seat in a different fork, so we only list what is confirmed for your bike.
| Kit | Years | Seal size | Replaces OEM |
|---|---|---|---|
| 57-146 | 2021–2026 | n/a | n/a |
| 56-197 | 2021–2026 | n/a | n/a |
| 55-163 | 2021–2026 | n/a | n/a |












