Baron Custom Accessories Baron Replacement Filter BA-2301-00 Thinline BAK Replacement Air Filter - BA-2301-00 by Baron custom Accessories Replacement "Thin-line Style" filter element for New-Style Baron teardrop-shaped Big Air Kit filter assembly Designed for "Thin-line Style" BAK assemblies only Reusable replacement filter for Baron Big Air Kits with 11/2" air filters See Description for fitment