The component with the lowest price in the F-16-1 EXHAUST MUFFLER (XR350RF.RG) schematic is the Bolt-washer,6x12.
In this schematic the "Collar,ex.pipe" is used most often.
The sub assemblies and components that make up this F-16-1 Exhaust Muffler (xr350rf.rg) include this Muffler, the most expensive part.