This is a Bisson Pitts Style Muffler for the
O.S. Max .91FX Two-Stroke Engine.

FEATURES: Large volume oval main chamber for improved engine "breathing".
Directs exhaust gases out bottom of cowl at slight back-facing
angle for clean routing.
Welded aluminun construction.
Pitts-Style (engines mounted on their side)

INCLUDES: One Muffler
One Pre-Installed Large Pressure Fitting

REQUIRES: No Mounting Bolts are included, use OSMG6925.
Muffler Gasket, use PEFR1405.

SPECS: Overall Length (exhaust flange to end of exhaust tubes): 100mm (4")
Tube Length: 63mm (2-1/2")
Exhaust Tubes: 7.5mm inside diameter, and are 30mm (1-3/16") apart
Main Muffler Chamber- Length: 95mm (3-3/4") Height: 25mm (1")
Width: 55mm (2-3/16")
Mounting holes from center to center: 42mm