The YFZ450R SE features eye catching Black/Blue graphics with quick-release fasteners for no-tools installation and removal of the front and rear
fenders, and a dealer-installed GYTR® black front grab bar.
The prestigious
“ATV of the Year” Award
from ATV Sport Magazine. “Best
in Class” from ATV/SxS Illustrated.
Winner of shootout after shootout.
The
YFZ450R took ’em all –
in its first model year, right out
of the starting gate. This is one
amazing ATV!
In ATV motocross,
great power output doesn’t
mean much without superior handling.
YFZ450R delivers!
The stance of the
YFZ450R is motocross ready. The
weldless frame is designed from
lightweight aluminum, with a tension-steel
bottom frame
that lets the engine sit lower for
excellent mass centralization. Suspension
components have more travel, carefully
chosen for best performance, and
the front shock bodies feature Kashima
coating for even smoother operation.
Fatigue can sometimes
be a racer’s worst competition.
That’s why the YFZ450R’s
designers made this ATV so comfortable.
It boasts racerfriendly
ergonomics with plenty of room to
hang off in the corners, and the
seat is padded just right to be
more comfortable regardless of riding
position. Handlebars are 4-position
adjustable, too, so every rider
can choose the best position, and
the throttle has been designed for
all day comfort.
This 449cc engine
uses titanium five-valve cylinder
head technology, with a camshaft
designed just for this machine to
deliver abundant low to midrange
torque for performance where you
can really use it to take the lead
– while still maintaining
a superstrong top end to let you
pull away from the pack.
The YFZ450R incorporates
Yamaha Fuel Injection for precise
fuel delivery. With big 42mm Mikuni®
throttle body and 12-hole injector,
this system provides exceptional
atomization of the fuel for maximum
power. The system also includes
ISC (Idle Speed Control) for easy,
reliable start-up and warming.
This ATV is designed
to make race prep easy. Body panels
come off easily for service; there’s
no need to remove the battery or
other components to get the fenders
off. The aluminum frame is bolted
together, rather than welded, for
maximum durability. And the oil
tank is integrated with the crankcase
so it’s easier to service
the engine.
Yamaha
YFZ450R ATV Engine
The fuel-injected 449cc engine has
superb power characteristics. Power
delivery is smooth and strong off
the line with lots of low and mid
range where you need it.
The crankcase holds a crankshaft
that’s ready to handle the
increased balance ratio, as well
as a counterbalancer for superior
vibration control. The crankcase
also houses the oil tank, which
helps to centralize mass for unmatched
handling and makes
maintenance easier.
Camshafts are designed to maximize
the torque available in the low
and mid ranges.
Fuel injection uses a 12-hole injector
that provides exceptional atomization
of the fuel for maximum combustion
efficiency and power delivery. The
system also uses a big, 42mm Mikuni®
throttle body and includes ISC (Idle
Speed Control) for easy,
reliable start-up and warming.
Yamaha
YFZ450R ATV Chassis/Suspension
The chassis is
very spacious, allowing room for
even an aggressive racer to move
around during the moto, and the
ATV’s body panels that the
rider contacts during operation
are of a softer plastic material
for greater comfort. The seat is
narrow in the front, yet wide and
padded in the rear to provide a
more comfortable ride, even when
hanging off on the side of the seat
in a turn.
The wheel has
been designed with the inner lip
rolled in. This increases the rigidity,
allowing a reduction in weight while
maintaining strength.
Wheels are set
motocross-spec wide, near the maximum
allowable 50 inches, for great cornering
ability. The Dunlop® tires are
grippy with a great pattern for
cornering, and at 20 inches in the
rear and 21 inches in the front,
provide much better ground clearance
than the competition. That makes
the YFZ450R fun to ride off-road,
too.
ProTaper®
handlebars are mounted on 4-way
clamps for exceptional adjustability.
There are two sets of holes in the
handlebar crown, and eccentric clamps
so the rider can choose the standard
setting, 10mm or 20mm forward, or
10mm back.
Foot pegs are
a generous 2.6 inches wide, something
riders will appreciate every time
they want to get up on the pegs,
with good kick-up on the ends for
solid footing.
The frame is aluminum
for lightweight, except for the
frame member under the engine. Here
tensioned steel is used for its
combination of strength and thinness.
This allowed the designers to sit
the engine lower overall for excellent
mass centralization for unmatched
handling. The aluminum frame is
bolted together, rather than welded,
for maximum durability.
The front frame
is noticeably narrow at the A-arm
mounting points. This dramatically
reduces changes in camber as the
long A-arms travel through their
full range of motion. The front
44mm KYB® shocks have Kashima
coating for smooth operation with
superb bump absorption and excellent
anti-bottoming characteristics.
The 9.8 inches of wheel travel means
this racer is up to even the most
challenging tracks.
The rear swingarm
is crafted of strong, gravity-fed
aluminum, and it’s matched
to a fully adjustable 46mm KYB®
piggyback shock absorber for excellent
handling. Rear wheel travel is 11.0
inches for comfort even on tough
terrain.
For excellent
stopping ability, YFZ450R features
dual front hydraulic disc brakes
and a trick looking, lightweight
wave-type rear rotor.
Additional
Features
The throttle lever
requires low effort, and it’s
very comfortable
to use. That means less fatigue
during all-day riding.
The instrumentation
is all business. The discrete panel
on the fender in front of the rider
gives vital indicators about low
fuel, coolant temperature, check
engine, and neutral gear via a straightforward
LED display.