Macs Bolt-Through Muffler O.S. 91FX

Tower Stock# LXNUP4  •  Manufacturer Stock# 6980
Macs Bolt-Through Muffler O.S. 91FX (large view)
Notes from our tech department:
This is a Bolt-Through Muffler from Macs for the
OS .91 FX, Magnum .91 Pro and the ASP .91 engines.

FEATURES

Black aluminum construction
One piece construction
Ready for Macs New Smoke System

INCLUDES

One Muffler w/ pre-installed pressure fitting
Two Muffler screws (8-32 x 1.875")

REQUIREMENTS

Thread-locking compound to keep screws tight

SPECIFICATIONS

Overall length: 8.25" (291mm)
Length from center of exhaust port to end of muffler: 6.50" (165mm)
Body Diameter: 1.50" (38mm)
Exhaust Port Opening: 1.10" x .35"
(28mm x 9mm)
Width between mounting hole centers: 1.65" (42mm)

COMMENTS

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

NNA 11/01/06
ir/jxs

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