300-8173 Muffler insert for Supertrapp 3" muffler with three screws. Can also be used as a replacement for silencers with central screw connection.

Advantages
Stronger and lighter than single center boit.
Accessory Open End Cap available.
Improved Flow (no cross bracket).
Easier disc installation.
End Cap and Disc Installation
Install discs with their outlets pointing toward end cap as shown in the diagram below. To ease installation, first insert the 3 screws (with a small amount of Hi-Temp Lube) through the end cap and disc stack. While holding the muffler body horizontal, insert entire disc assembly into the body using the supplied T-Handle Hex Key inserted into one of the screw heads as a handle.
Rotate muffler vertically so the discs drop against core. Tighten screws in a cross-patter to approximately 45 in-Ibs torque. It is essential that they are torqued evenly. Always use Hi-Temp Lube when installing or changing discs.