This is the Bisson Inverted Muffler for use with the O.S. Max .91 FX 2-stroke engine, OSMG0591.
FEATURES: Pre installed pressure nipple For use with .91FX when engine is mounted upside down (inverted) No mounting bolts included
INCLUDES: One Bisson muffler for inverted .91FX with pre-installed fitting
REQUIRES: O.S. .91 FX Mounting bolts (OSMG6925)
SPECS: Length overall: 5" (127mm)
Length neglecting exhaust outlet: 3.25" (82.5mm)
Distance between mounting hole centers: 1.7" (43.17mm)
Width: 2.24" (56.9mm)
Height: 1.37" (34.84mm) including mounting flange
COMMENTS: This muffler is used in an application where the engine is mounted upside down (inverted). For side mounted applications an individual would use a Pitts style muffler such as BISG4091