Houser Racing was the first company we turned to when we began
putting parts together for this build.
We wanted performance parts that
would withstand hours of racing in
harsh desert-style terrain, as well as
on a motocross track. Houser sent
over their + 2. 25 long-travel A-arm kit
that includes their Slicast system. You
can adjust the caster and camber of
the wheels with this kit, which is very
beneficial for different courses. Houser
also sent over a +1 anti-vibe steering
stem and a universal handlebar clamp.
Now that the front end of the quad is
wider, we picked up a + 2 Tusk axle
from Rocky Mountain ATV/MC to
widen the rear. Resting in the Houser
handlebar clamp is a Fasst Flexx handlebar that has elastomers that soften
the ride and transfer less shock and
vibration to your hands. A set of ODI
Roque lock-on grips were then mounted to the bars to provide a cushiony
One of the biggest improvements to
this TRX is the Elka suspension. Stage
5 shocks were bolted between the
Houser arms and the Honda. A rear
Stage 5 shock was installed with Elka’s
long-travel linkage system. The linkage
replaces the Honda linkage but uses
the stock swingarm. The shocks are
fully adjustable and provide dual- and
triple-rate springs to tune in the best
ride for your style.
The final front-end handling
improvement of this machine is the
addition of Precision Racing Products’
new Elite steering stabilizer that is
tuned for a pro-level rider yet easy to
use for riders of all skill classifications.
POWER TO THE MOON
Honda TRX450Rs come stock with
a potent four-stroke, single-cylinder engine that is still carbureted.
Fortunately, that means it’s generally easy to upgrade and get a bit
more juice out of the motor. We
went to HMF to get a blacked-out
Performance-series full exhaust with
a custom powdercoated blue muffler
can. The header is stepped to provide
more power down low and a stronger
hit through the mid and high end of
the rpm range. HMF also sent a jet kit
for the carburetor that adds more fuel
to the mixture. Next, a K&N reusable
air filter kit was installed to let the
engine breathe much easier and a new
oil filter along with Maxima engine
oil to help keep the engine running
Next, we went to Boyesen for a few
performance parts. A Quick Shot 3
accelerator pump was installed on the
carburetor to provide a better power
hit and help the machine start easier.
Another beneficial add-on is a Ballistic
Performance Components EVO Power
System battery kit. The battery is lighter and is a lithium-iron battery with a
health monitor and charger included
in the kit.
A Boyesen Super Cooler kit replaced
the stock water-pump impeller and
cover. The Super Cooler impeller push-
es more coolant through the engine,
which keeps engine temperatures
down and reduces power fade under
extreme operation. CV4 coolant hoses
replaced the stock ones, and Evans
coolant was used to fill the radiator.
Before the engine was put back
together, Colt Brinkerhoff, another one
of our editors, installed a Hinson clutch
kit on the Honda. The Hinson clutch
has more oiling holes in the inner hub
to keep the plates more lubricated and
keep friction down. The clutch action is
smoother, and the new clutch springs
are more specific to how the machine
operates. Eighty-weight Maxima trans-
mission/clutch fluid is used to lubri-
cate the clutch and gears.
OMF Super Lite scalloped, billet-aluminum beadlock wheels were custom
powdercoated white and purple to match
the build. GBC tires are wrapped around
the rims for great traction.
(Top right) SDG offers full seat assemblies for the TRX450R. A hump seat with a gripper and ribbed seat cover was chosen
for this project. Seat-of-the-pants traction is ample. (Middle right) The HMF exhaust provides more power through every part
of the power range. The system can be given a black coating, but we had the can custom powdercoated to match the build.
(Bottom right) A Tusk axle, Hess Motorsports rotor guard, Works Connection block-off plate and TM Designworks Slide-N-Guide kit were installed on the rear of the quad.