K&N Filter - Yamaha XT250

The K&N KYA-2509 is a direct replacement air filter shaped to drop straight into the standard airbox of the Yamaha XT250 (2008-2025 models). No airbox modification, adaptors or extra hardware are needed - remove the factory element and fit the K&N in its place.

It suits XT250 owners who want a serviceable filter rather than a throw-away paper element. The cotton-gauze media is washable and re-oilable, so the same filter can be cleaned and refitted through the life of the bike, which makes it a practical choice for trail work, commuting and dusty rural riding where the airbox sees regular attention.

Cleaning and oiling products are sold separately.

• Direct replacement for the Yamaha XT250 factory air filter element
• Fits XT250 models from 2008 through 2025
• Drop-in fitment - uses the standard airbox with no modification
• Washable and reusable cotton-gauze media, serviced rather than discarded
• K&N part number KYA-2509

• K&N KYA-2509 replacement air filter

Confirm your model year against the fitment listing before installation, and compare the new filter with the element you remove.
Seat the filter fully in the airbox so the sealing edge sits flat all the way around, then refit the airbox cover and check it clamps down evenly - an unsealed filter lets unfiltered air past.
Inspect the filter at each routine service, and far more often after riding in sand, dust or mud.
Clean the cotton-gauze media with a purpose-made K&N filter cleaner; do not use petrol, solvents, strong caustic detergents or a pressure washer, as these break down the media and adhesives.
Rinse gently with low-pressure water from the clean side outwards to push dirt back out of the media, not deeper into it.
Allow the filter to air dry naturally at room temperature. Do not use compressed air, a heat gun or open flame to speed it up.
Re-oil only once the filter is completely dry, applying K&N filter oil evenly along the pleats and letting it wick through before refitting. Avoid over-oiling, which can foul the intake and any air sensors.
Never run the engine with the airbox empty or the filter removed.
Store a spare filter flat in its box, in a cool dry place out of direct sunlight, and replace the element if the media is torn, distorted or the sealing edge is damaged.