Twin Air Dual-Stage Air Filter for Suzuki RM-Z250 / RM-Z450 / RM125 / RM250 - 153215 2004 Kawasaki KSF400 but especially at low RPMs

but especially at low RPMs it is most important on these vehicles

1999-07 Polaris 500XCSP

2020 Polaris Sportsman 570

1995 Ducati M900 Monster

Bore-Actual: 41

Twin Air Dual-Stage Air Filter for Suzuki RM-Z250 / RM-Z450 / RM125 / RM250 - 153215 2004 Kawasaki KSF400 but especially at low RPMsTwin Air Racing Dual Stage Air Filter Part Number: 153215 Fused dual layer design for a combined increase in performance and protection Revolutionary micro gluing process minimizes seams for added protection Washable and reusable up to 50 times without replacement New Round design boosts air flow Twin Air's breakthrough, fused dual layer design (now widely copied) for combined performance and protection. The fused layers of open pore foam and fine