FEATURES: Natural Aluminum Construction Black Steel Cap Head Screws
INCLUDES: One Muffler Extension Two 4x55mm Hex-Head Mounting bolts (Shouldered).7mm coarse thread
This is the Muffler Extension for the #744B & E-4010 OSMG2838, & E-4020 OSMG2840 OS Max mufflers. It allows for the muffler to be mounted farther away from the engine.