Macs Bolt-Through Muffler O.S. 61FX

Tower Stock# LXZ656  •  Manufacturer Stock# 6860
Macs Bolt-Through Muffler O.S. 61FX (large view)
Regularly Purchased Together
Although customers also purchased these, compatibility is not guaranteed. Click an item for product details.

Notes from our tech department:
This is a Bolt-Through Muffler from Macs for the following Engines:
OS .60FP, .61 FS, .61 FX
Thunder Tiger .61 GP & Pro
Magnum .61 Pro
MDS .68 FS Pro


Black aluminum construction
One piece construction
Up to 50% lighter than stock mufflers
Pre-spot drilled for Macs Smoke System


One Muffler w/ pre-installed pressure fitting
Two Muffler screws (6-32x1.75")


Thread-locking compound to keep screws tight


Length: 7.9"(200mm) from center of exhaust port to end of muffler
Width: 1.72" (43.8mm) between mounting holes
Diameter: 1.26" (32.0mm) at largest point
Exhaust Port Opening: 1.15"x0.36" (29.2x9.0mm)


Bolt-Through means that the screws go through the engine and
screw into the muffler.

cmc 05/11/02

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