- The wheel has been redesigned, with the inner lip rolled in.
This increases the rigidity, allowing a reduction in weight while
maintaining strength.
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- 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 racer-friendly
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 super
strong 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.
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- 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.
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- 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.
- 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.
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- 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.
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