Description
Specs
Standard Features
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Description

Brand New

One purpose...race dominance.

Designed to dominate the race track, the YFZ450R is sure to draw many checkered flags.

With a "wide-track" chassis and long travel suspension, the 450R provides incredible stability, confidence and control. The powerful five-valve 449 cubic centimeter race engine is fuel injected with many components developed from our motocross bikes including the cylinder, cylinder head, cams and crank designs. The engine is cradled by a hybrid aluminum chassis for optimized strength and rigidity, making the YFZ450R the most capable racer we've ever developed.

Specs

Manufacturer
Yamaha
Model Year
2010
Model
YFZ450R SE
Price
*$6,999.00
Color
Special Edition Blue

Dimensions

Length
70.7 in. (1,795 mm)
Height
41.9 in. (1,065 mm)
Width
48.8 in. (1,240 mm)
Ground Clearance
4.5 in. (114 mm)
Wheelbase
50 in. (1,270 mm)
Seat Height
31.9 in. (810 mm)

Engine

Engine
4-stroke single, titanium 5-valve, DOHC
Displacement
449 cc
Bore x Stroke
95 x 63.4 mm
Compression Ratio
11.6:1
Carburetion
Yamaha Fuel Injection (YFI), 42 mm
Fuel Tank Capacity
2.6 gal. (10 l)
Ignition
TCI (digital)
Starting
Electric
Clutch
Manual
Cooling
Liquid with fan

Drivetrain

Transmission
5-speed
Drive System
2x4

Brakes/Wheels/Tires

Brakes
Front: Dual ventilated hydraulic disc, twin piston calipers
Rear: Wave style ventilated hydraulic disc, twin piston caliper
Tires
Front: AT21 x 7-10 Dunlop KT351 radial
Rear: AT20 x 10-9 Dunlop KT356 radial

Operational

Suspension
Front: Independent "Wide Arc" double wishbone with Kashima coated piggyback shocks, high-/lo-speed compression, rebound and threaded preload adjustment; 9.8 in. travel
Rear: Cast aluminum swingarm with piggyback shocks, high-/lo-speed compression, rebound and threaded preload adjustment; 11 in. travel

Standard Features

FUEL INJECTED 4-STROKE ENGINE
 Dual Over Head Cam (DOHC) 449 cc 4-stroke engine retains a 5-valve head for optimum high RPM power. Many of this engine's design elements have come directly from our race winning YZ motocross bikes, including the cylinder, cylinder head, cams and crank. Engine power and mid-range response are both improved over the carbureted YFZ and with Yamaha fuel injection, engine power is always optimized, regardless of altitude or temperature. Engine durability was improved over the old carb versions as well with beefed up crankcases, a large diameter big end crank bearing, stronger connecting rod and a smoother counter balancer.  
YAMAHA FUEL INJECTION
 Yamaha Fuel Injection (YFI) 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, 42 mm MikuniŪ throttle body and includes ISC (Idle Speed Control) for easy, reliable start-up and warming. YFI constantly monitors variables such as air temperature, intake pressure, engine temperature, throttle position and more, to ensure optimum fuel delivery. YFI automatically compensates for changes in temperature, elevation, and even barometric pressure. This means you don't have to fool with carburetor jetting, so you can focus on the ride.  
HYBRID ALUMINUM & STEEL FRAME
 The frame is designed of lightweight aluminum, with a tension-steel bottom frame that lets the engine sit lower for excellent mass centralization. The lower frame is made from strong high tensile steel, since that portion typically takes the majority of abuse from rocks and debris. This hybrid frame also incorporates a "Zero Weld" design for maximum strength.  
WIDE TRACK CHASSIS
 For ultimate track handling and stability, the YFZ450R is 3-inches wider than the YFZ450 X. The front a-arms incorporate the "Wide Arc" design to greatly improve ground clearance, so obstacles are less likely to impact the lower a-arms. Upper and lower a-arm pivot points are positioned close together to reduce the pivot angle and improve suspension control.  
HIGH TECH LONG TRAVEL SUSPENSION
 The suspension geometry allows for long travel front shocks with 9.8 inches of front suspension travel. Piggy-back reservoir front shocks are robust with 44 mm rods and a Kashima coating for reduced friction.  
 In the rear there's a long cast aluminum swing-arm serving up 11 inches of travel from a long-travel fully-adjustable piggyback shock.  
 All three shocks (front and rear) have high and low compression, rebound and threaded pre-load adjustments enabling you to tune the ride to the conditions.  
SPACIOUS AND COMFORTABLE ERGOS
 A wide-back seat provides the perfect balance between comfort and movement. It's narrow in the front for easy transitions from side to side, but wide in the back to help cushion the landings and rough corners. And even though the YFZ R has long suspension travel and a race oriented seat design, seat height remains at a low 31.9 inches.  
RACING CONTROLS
 ProTaperŪ 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, 10 mm or 20 mm forward, or 10 mm back. The thumb throttle is designed to minimize effort. The front flip-type parking brake is removable for racing. The front brake lever is adjustable and the clutch lever is adjustable on the fly.  
CUSHIONED PANELS
 Easily replaceable panels in high wear areas will provide flex and grip for aggressive riding.  
EXCLUSIVE 20 INCH REAR TIRES
 20 inch rear tires offer extra ground clearance and the best all round performance for track and trail.  
SUPER WIDE FOOT PEGS
 65 mm wide foot pegs help ensure your feet have traction when you need it. They are 20 mm wider and 12 mm longer than the '09 carbureted YFZ.  
ADDITIONAL FEATURES
 LED tail light for improved visibility, longevity and reduced electric power consumption.  
 Wave rear brake rotor for less unsprung weight.  
 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.  

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