MUFFLER REPACKING
P72
HOW-TO
Repacking your
muffler on a
regular basis will
reduce sound
and increase the
horsepower of
your bike.
STEP 1: If your
bike has a spark arrestor or
sound-reducing insert,
remove that. For
some bikes, this
may be part of the
end cap and not come
out separately.
STEP 2: For
most mufflers, you will
remove the rear end cap
but, on some systems,
such as the FMF system
we used for this example,
you will instead remove
the exhaust tube enter-
ing the front of the muf-
fler. And some mufflers
such as the stock KTM
EXC dual sport mufflers
come apart from both
ends. Some mufflers use
bolts or screws while
some use rivets, which
will require drilling out.
Rebuilding a stock or aftermarket muffler is not that difficult.
These are the necessary tools you will need for most systems.
The gloves, eye protection and mask are strongly recommended
as fiberglass is very irritating to your skin, eyes and lungs.
