KTM 400 SX Replacement Air Filters

Buy now from K&N's Online Store and get a 100% money back guarantee on any KTM 400 SX air filter!

  • Designed to Increase Horsepower and Acceleration
  • High Air Flow with Excellent Filtration
  • Top Performance Accessory for KTM 400 SX Models
  • K&N Million Mile Limited Warranty®

Order your K&N replacement air filter Factory Direct today! Help your KTM 400 SX run better. Fast and FREE SHIPPING with any KTM 400 SX air filter

  1. 2002 KTM 400 SX 400 air filter
    Special Price €182.99 Regular Price €243.99
    KT-5201
    K&N
  2. 2001 KTM 400 SX 400 air filter
    Special Price €182.99 Regular Price €243.99
    KT-5201
    K&N
  3. 2000 KTM 400 SX 400 air filter
    Special Price €182.99 Regular Price €243.99
    KT-5201
    K&N
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