Top Flite .61-.75 In-Cowl Muffler FEATURES: Completely Conceals Inside the Cowl Bolts Directly to the Firewall for Maximum Security Can-Type Cylinder For use on .60-.75 2-Stroke Engine INCLUDES: Muffler, Firewall mounting screws (2), Pressure fitting, Pressure Fitting Gasket, Silicone Mounting Washers (2), Pressure Plug Screw INCLUDES: Muffler, Firewall mounting screws (2), Pressure fitting, Pressure Fitting Gasket, Silicone Mounting Washers (2), Pressure Plug Screw