Exhaust ring for the FG-73R5 radial engine. This ring is especially nice if you plan on cowling in the engine and exhaust to be directed out the bottom.
The exhaust stack is at the bottom and long enough to fit most applications. Simply cut off the excess. When installed, it has a clean look and a cool sound.
Ring dimensions: Diameter: 7-1/2 inches OD Diameter: 6-3/8 inches ID Distance from back of ring to firewall: 1-9/16 inches Tailpipe: 1.25 wide, 3.5 long
Same Principle Applies to FG73.