ktm 303See cross reference chart for K-N KN-303 and more than 200.000 other oil filters. K-N KN-303 - Alternative oil filters. There are 113 replacement oil filters for K-N KN-303. The crossTwo years ago the 2025 KTM SX -up grabbed the holeshot with major updates across the range. For 2025, the KTM SX and SX-F brings even more firepower to the starting gate.