THE PRODUCT: Two Brothers
Racing is on top of their game, releasing an exhaust system for nearly every
new ATV to hit showroom floors. While
the Grizzly 700 exhaust may not be
their newest piece, the “Juice Box”
fuel controller they sell alongside it is.
The Juice Box is the same generic
controller used by companies like
LRD, FMF, Motoworks, and Dragonfire
Racing, and it comes programmed
with the correct fuel map for their
pipe. The Grizzly pipe we tested retails
for $329.98, and the Juice Box will
cost you a whopping $299.98, nearly
the same price as the pipe! FMF and
LRD sell the same controller with a different logo for $249, and Dragonfire’s
will only cost you $225, but is not set
up specifically for the Grizzly 700 at
this time; just for the Rhino 700, which
uses the same wiring harness.
MATERIALS: The midpipe is made
of chromed stainless for a shiny finish,
and the muffler is aluminum. Two Bros
uses a lot of billet pieces, like their X-ring, which is an X-shaped flange with
four Allen bolts that connects the midpipe to the muffler. Utilizing the X-ring
makes mounting the pipe a piece of
cake, because you can adjust the
angle of the midpipe separately from
the muffler so it fits smoothly, then
tighten it down.
INSTALLATION: To bolt ours up, we
had to remove the seat, left side
cover, and the battery box cover.
Bolting the system up was easy, and it
uses the factory heat shield, which is
held on by three large hose clamps.
Yamaha uses strong springs to hold
the midpipe in place, which is the only
difficult part of the installation. If the
springs seem too short to attach the
Two Bros system to the stock header,
bend the spring brackets on the
exhaust closer to the factory mounts.
Installation of the pipe was simple,
and took less than 20 minutes. The
fuel controller is simple to install as
well, because Yamaha made the fuel
injector accessible from the side panel
without removing the tank. Simply
plug the unit into the factory harness,
and ground it to the battery. We
mounted ours up on the handlebars to
make fuel adjustments on-the-fly easier, but it can be stowed under the
front battery cover as well.
PERFORMANCE: We ran a baseline on the L&L Motorsports dyno,
(661) 944-9043, and came up with
about 31 hp at the wheels, in high.
After the Two Bros pipe and tuner,
using the pre-configured map, it made
around 36 hp at the wheels, and
revved out much quicker. The throttle
response increased tremendously, and
the Grizzly now has the power to turn
a larger wheel and tire package with
ease. The pipe is rather loud for a 4x4,
coming in just between 97 and 98 dB,
but it sounds healthy.
THE VERDICT: While the pipe is
priced competitively, the tuner is not.
The bummer is, you have to buy the
tuner in order to use the pipe! The
performance gains are worth the
money, and we suspect that a good
clutch kit will unlock another two or
three horses hidden in the powerband.
The Two Bros system is a good quality
piece, but we believe the price on the
fuel controller should match with their
PRICE: $329.98 (EXHAUST);
$299.98 (Juice Box Fuel Controller)
CONTACT: Two Brothers Racing;
TWO BROTHERS RACING YAMAHA
GRIZZLY 700 EXHAUST
We mounted our Juice Box tuner
on the handlebars so we could
tune it on the dyno without having to take the plastics off.
It’s nice that you can use the factory heat shield with
the muffler, and the exhaust note is throaty.
UTV’s weights aren’t to be taken lightly.
Discount Ramps Big Boy II Ramps are
packed with features and strength that
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The Big Boy II ramps are ten feet long to
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CONTACT: Discount Ramps, (888)