Current Selection Ducati Monster S4R MODEL YEAR 2003 2004 2005 2006 2007 2008 STATUS Active Products Archived EXHAUST SLIP-ON LINE RACING LINE EVOLUTION LINE OPEN LINE APPROVAL EC TYPE APPROVAL W/O APPROVAL EPA (80dBA ) CARB Compliant (Replacement part) CARB Compliant (modified P. parts, E.O. number) CARB Compliant (Racing vehicles only) CARB Non-Compliant PROGRAM CUSTOM OFF-ROAD ROAD SCOOTER