Arlen Ness - Big Sucker Derby Cover Air Filter Kits


  • Unique air filter kits feature a 5-hole mounting system which allows Twin Cam derby covers (not included) to be bolted on as the outer cover
  • Pre-oiled filters available in two styles: standard or stainless-steel jacketed
  • All kits include patented Ness hidden breather Big Sucker backing plates in either chrome or powder-coated black wrinkle finish
  • C.A.R.B. compliant ref. E.O. #D-639-2 approved for many 97-09 EFI applications.