P132
CN
III PRODUCT REVIEW
PRO MOTO BILLET SPARK
ARRESTOR END CAPS
List Price:
Spark arrestor end cap
assembly (set of 2) $259.95
Silent turn-downs (set of two)
$79.95
FastwayPerformance.com
Standout Feature:
You don't have to purchase
a whole new muffler (or two)
if you're in need of a spark
arrestor for you bike. This saves
you money!
Rider Analysis:
We found installing the Pro
Moto Billet end caps to our
Honda CRF450RX to be easy,
but time consuming. But that's
no fault of Pro Moto; it's just
that the stock end caps are
difficult to remove, and difficult
to remove without damaging
them. Once the stock mufflers
are ready for the new end caps,
they bolt right up.
The Pro Moto Billet end caps,
even with the spark arrestor
screens installed, mimic the
power output of the stock end
caps. The outlet diameter of
the Pro Moto Billet end cap
nozzle is fairly large and lets
the exhaust flow freely, which
is great for riders not wanting a
spark arrestor to hamper stock
performance. This free flow
design means the noise output
is equal to stock, even with the
spark arrestors installed. On
the track we were very happy
with the performance, but
off-road, on tight single track
the CRF450RX is still loud,
ultra throttle responsive and
a handful in technical terrain.
We installed Pro Moto Billet
Silent turn-downs in an effort to
mellow out the off idle response
and lower the noise output.
Install is only a two-minute job
and the Silent turn-downs work
well to quiet the CRF450RX
while softening the initial power
hit. With the Silent turn-downs
the CRF450RX doesn't feel
so aggressive and hyper. The
Silent turn-downs also helped
reduce the flame-out tendency
at lower rpms. Overall we really
like the Pro Moto Billet end
caps. They allow three different
configurations for our CRF450RX
and allow us to legally (and a little
more quietly) enjoy riding areas
we wouldn't be able to access
with stock mufflers, all for a
reasonable price.
Adam Booth
The 2017 Honda CRF450R/RX Pro Moto Billet spark arrestor end cap assemblies come with a remov-
able nozzle, a spark arrestor screen and all required mounting hardware. They are made from ma-
chined 6061 aluminum right here in the U.S. Pro Moto Billet end caps are an economical way to con-
vert your stock mufflers into USDA-approved spark-arrested mufflers. When the spark arrestor screens
are not required, like riding at the MX track, they are very simple to remove. The removable portion of
the end cap (nozzle) is machined out of solid 6061 aluminum and anodized with a protective finish. If
cutting down on the noise output of your bike is important, Pro Moto Billet offers the Silent Insert. It
reduces the exhaust note by 3-5 decibels and is very easy to install into the Pro Moto Billet end cap.
