It allows for the muffler to be mounted farther away from the engine.
Natural Aluminum Construction
Black Steel Cap Head Screws
One Muffler Extention
Two 4x55mm Hex-Head Mounting bolts (Shouldered).7mm coarse thread
Extention Length: 15mm (.59")
Overall width: 52mm (2.05")
Width between mounting hole centers: 42mm (1.65")
Exhaust port dimensions: 22.2mm(.875") x 9.1mm(.36")
A 3.0mm allen wrench is required for tightening the Hex-Head screws.
Other muffler extensions use: OSMG2586 35mm
updated tjt 042605