Bisson 04061 Pitts Muffler O.S. 61SF / 61FX / 65AX / Pro .61
This is a bolt-on style Pitts muffler for the O.S. .61 SF series engines.
Also fits Thunder Tiger Pro .61 engine
Pitts-style mufflers are used on engines that are side-mounted (lying on their
side) inside of cowls. This routes the exhaust out the bottom of the cowl.
Pitts muffler (with brass pressure fitting installed)
Overall width: 3-3/16″ Overall depth: 2″
Height (not including exhaust tubes): 1-1/4″
Length of exhaust tubes: 2-7/16″ (may be cut shorter), 7/16″ outer diameter