DNA KTM EXC 250, SX 250 and MXC 250 motorcycle air filter adds horsepower while letting your dirtbike breathe better. The efficiency of DNA Filters maximizes breathable surface area compared to the OEM filter allowing you to get the most horsepower with 99% clean air filtration.Equivalent to KTM OEM: 51206015000/ 54806016000/ 59006015000 TECHNICAL FEATURES Features DNA's advanced FCd (Full Contour design) DNA Fcd air filter flow: CFM (Cubic feet per minute) @1,5" H2O corrected @ 25 degrees Celsius The DNA filter has a substantially higher airflow than the stock paper filter! Extremely high filtering efficiency of 98-99%, with 4 layers of DNA Next Generation Premium Cotton These air filters are washable and resusable Drop-In Hassle Free Installation (simply follow the information in the workshop manual) Lifetime Warranty FITS KTM SX 250 (1998-2006) KTM EXC 250 (1998-2005) KTM MXC 250 (1998-2001) KTM XC 250 (2006-2007) KTM XC-W 250 (2006-2007) KTM MXC 250 (1998-2001)