KTM 125 XC Oil & Air Filter
GarageDex's powersports data shows the KTM 125 XC uses air filter HFF5021 and oil filter HF652. Filter fitment varies by year - see the table for each range.
Filter fitment by year
| Years | Air filter | Oil filter | Performance oil |
|---|---|---|---|
| 2025 | HFF5021 | HF652 | - |
| 2025-2026 | HFF5021 | - | - |
| 2023-2025 | HFF5021 | - | - |
| 2021-2022 | HFF5019 | - | - |
| 2017-2019 | HFF5019 | - | - |
Match the exact part code. Performance oil filters are optional racing-spec upgrades that fit the same mount.
Filters for your KTM 125 XC
The recommended parts are the HFF5021 air filter and the HF652 oil filter. Match those codes (or a listed equivalent) - powersports filters are model-specific, so the part code matters more than the brand.
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Frequently asked
What oil and air filter does a KTM 125 XC take?
GarageDex's powersports data shows the KTM 125 XC uses air filter HFF5021 and oil filter HF652. Filter fitment varies by year - see the table for each range.
What are the KTM 125 XC filter part numbers?
The KTM 125 XC uses air filter HFF5021 and oil filter HF652. Match the exact part code - powersports filters are model-specific.
Does the KTM 125 XC filter change by year?
Yes - the fitment differs across the years we cover: 2025 uses air HFF5021, oil HF652; 2025-2026 uses air HFF5021; 2023-2025 uses air HFF5021; 2021-2022 uses air HFF5019; 2017-2019 uses air HFF5019. Match your exact year in the table.
How often should I change a powersports oil and air filter?
Change the oil filter at every oil service - typically every 3,000-4,000 miles or once a season. Clean or replace the air filter more often if you ride dusty trails; a clogged filter chokes power and fuel economy.