O.S. Muffler Extension #744B

Tower Stock# LXCA83  •  Manufacturer Stock# 26625340
O.S. Muffler Extension #744B (large view)
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Although customers also purchased these, compatibility is not guaranteed. Click an item for product details.

Notes from our tech department:
This is the Muffler Extention for the
#744B & E-4010 OSMG2838, & E-4020 OS Max mufflers.

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

NNA 1/6/02
updated tjt 042605

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