Arlen Ness Replacement Red Stage 1 Air Filter for 18-498/ DS-288882; Description: Replacement Stage 1 Air Filter for Arlen Ness 18/498/ DS-288882 only on 1999-2001 Harley FLHTI/ FLHRI Team Ness High Flow Air Filter Available in either a Standard Filter (red) or Stainless Steel Filter Replacement Air Filter for your Stage 1 Big Sucker Air Filter Kit