|
|
YFZ450R
YFZ450R
YFZ450R |
From the championship-collecting original comes
the next checkered flag-claiming contender. The
YFZ450R has it all, from a hard-hitting all-new
engine to true long-travel, racer-inspired
suspension. Throw in fuel injection, an aluminum
hybrid frame and a wide, MX-inspired stance and
you can consider your reservations atop the
podium confirmed.
Key Features:
All NEW FOR 2009
- In ATV motocross, great power output
doesn’t mean much without superior handling.
YFZ450R delivers! Nearly three inches wider
overall than the YFZ450, the stance of this
new 450R is motocross-ready. The frame is
designed of 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’s
much roomier, 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. What’s more, the engine balancer
has been revised to even further reduce
vibration.
- This 449cc engine uses the cylinder head
and cylinder from the championship-winning
YZ450 for awesome power output. That means
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 adopts 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.
Engine:
- The fuel-injected 449cc engine uses the
cylinder head and cylinder from the YZ450
for superb power characteristics. Power
deliver is smooth and strong off the line
with lots of low and mid range where you
need it. As rpm climbs you’ll find the same
top end punch that has made the YFZ450 such
a fierce competitor and class leader.
- The new crankcase holds the newly
designed crankshaft that’s ready to handle
the increased torque output, as well as the
counterbalancer that has an increased ratio
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 all new for this model,
and 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.
Chassis/Suspension:
- The chassis is very spacious, allowing
room for an aggressive racer to move around
during the moto, and the ATV’s body panels
that the rider contacts during operation are
of a special, softer plastic material for
greater comfort. And 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 newly designed Dunlop® front tires
have a superb combination of the right
compound, tire profile, tread pattern, and
sidewall-to-tread-center-stiffness ratio to
provide outstanding comfort, bump
absorption, and precise cornering
performance. The rear Dunlop® tires also
help the rider achieve a high level of
performance with superb feedback in turns
and great grip on the turn exit. At 20
inches in the rear and 21 inches in the
front, the tires also 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 huge 65mm 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 all-new 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 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 10.4 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 11.02 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 new throttle lever requires less
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.
Specifications
Engine
- Type 449cc, 4-Stroke Single, Liquid
Cooled w/ Fan, Titanium 5-Valve DOHC
- Bore x Stroke 95mm x 63.4mm
- Compression Ratio 11.6:1
- Fuel Delivery Yamaha Fuel Injection
(YFI) , 42mm
- Ignition TCI (Digital)
- Starting System Electric
- Transmission 5-Speed Manual Clutch
- Drive Train 2WD; Sealed O-Ring Chain,
Eccentric Adjustment
Chassis
- Suspension/Front Independent Double
Wishbone, 9.8”. Kashima Coated Piggy Back
Shocks, High/Low Speed Compression, Rebound
and Threaded Preload Adjustment.
- Suspension/Rear Cast Aluminum Swing Arm,
11.0”. Piggy Back High/Low Speed
Compression, Rebound and Threaded Preload
Adjustment.
- Brakes/Front Dual Ventilated Hydraulic
Disc , Twin Piston
- Brakes/Rear Wave Style Ventilated
Hydraulic Disc, Twin Piston
- Tires/Front AT21x7-10 Radial
- Tires/Rear AT20x10-9 Radial
Dimensions
- L x W x H 70.7 x 48.8 x 41.9 in
- Seat Height 31.9 in
- Wheelbase 50.0 in
- Ground Clearance 4.5 in
- Fuel Capacity 2.6 gal
- Wet Weight 405 lb
Other
- Lighting Dual 30W Krypton
multi-reflector Headlights and 3.9/0.5W LED
Brake light
- MSRP* $7,999 (Team Yamaha Blue/White)
Available from November 2008
$7,999
(White/Red) Available from November 2008
- Warranty 6 Month (Limited Factory
Warranty)
|
|
|
|
|
