This is the same Cradle assembly from our Karting Exhaust Cradle Assemblies (Part Nos. 9922-001 through -003). The steel cradle is designed to fit mufflers from approximately 3.5" to 4.5" diameter. Includes mounting bolt, rubber base grommet, and springs.
This mount could also be used to hold our 1 Quart Plastic Catch Bottle, Part No. 2581. The 2 5/8" OD of that bottle will be loose in this mount, so we recommend replacing the springs with a single worm-drive hose clamp.