Parts Catalogue › Ramflo 1 3/4 SU - RF304S Image 1 of 1 Ramflo 1 3/4 SU - RF304S $53.00 Sold Out Complete Ramflow Air Filter Assembly - fits HS6 (1 3/4”)Centre Hole Sold Out Added! Complete Ramflow Air Filter Assembly - fits HS6 (1 3/4”)Centre Hole Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More