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Description
Specs
Standard Features
Options
Color

Description

OTHER BIKES, PLEASE MOVE TO THE REAR

The revolutionary YZ450F will have many gazing far into the future. By slanting the cylinder rearward and reversing the intake and exhaust ports, the YZ450F's mass is more centralized for amazing balance, unprecedented handling and cornering. The bilateral beam frame and suspension offer fantastic feedback to the rider. Add fuel injection to the mix of these innovations and you'll agree: backward is the right way forward.

Specs

Manufacturer
Yamaha
Model Year
2011
Model
YZ450F
MSRP
 $8,150.00*

Dimensions

Length
86.3 in.
Height
51.6 in.
Width
32.4 in.
Weight
245 lbs.
Ground Clearance
15 in.
Wheelbase
58.7 in.
Seat Height
39.3 in.

Engine

Engine
4-valve (titanium), DOHC, 4-stroke
Displacement
449 cc
Bore x Stroke
97 x 60.8 mm
Compression Ratio
12.5:1
Carburetion
Yamaha Fuel Injection (YFI), Keihin® 44 mm
Fuel Tank Capacity
1.6 gal.
Ignition
CDI
Clutch
Multi-plate wet
Cooling
Liquid

Drivetrain

Transmission
Constant-mesh 5-speed
Final Drive
Chain

Brakes/Wheels/Tires

Brakes
Front: 250 mm hydraulic single disc
Rear: 245 mm hydraulic single disc
Tires
Front: 80/100-21-Dunlop® D-742FA
Rear: 120/80-19-Dunlop® D-756

Operational

Suspension
Front: KYB® Speed-Sensitive System, inverted fork; fully adjustable; 12.2 in. travel
Rear: KYB® fully adjustable single shock; 12.4 in. travel

Body

Colors
Two-tone Team Yamaha Blue / White, Two-tone White / Red (see Options for color pricing)

Standard Features

Key Features
 The 2010 YZ450F garnered the reputable title of Dirt Rider Magazine’s "Bike of the Year." Not to mention Cycle World’s "Best Motocrosser" and Motorcycle Magazine’s "Best Dirtbike of 2010."  
 YZ450F’s rearward-slanted cylinder is a revolutionary advancement that achieves unmatched mass centralization, concentrating inertial mass toward the center of the machine. This bold design also swaps traditional intake and exhaust positions, putting the lightweight airbox and throttle body out front. This contributes to mass centralization for nimble handling while also achieving a straight intake tract for superb combustion efficiency that delivers more power.  
 The cylinder is offset so the connecting rod is vertical at the moment of greatest combustion force, minimizing piston friction against the cylinder wall that could rob power. That means quicker response.  
 The 4-titanium valve cylinder head is matched to a fuel injection system developed specifically for the YZ450F. Instantly adapts to changing air / fuel mixtures depending on altitude and temperature, for an engine that delivers no matter what conditions.  
 The aluminum Bilateral Beam frame provides a superb rigidity balance that complements the engine for unmatched lightweight handling and cornering. The result? The best cornering, most nimble 450F for all track conditions.  
 Revamped looks deliver new-generation styling, including front and rear fenders, intake cover, front fork protector, and number plate, along with the fuel tank and seat.  
 Accessory GYTR® Power Tuner lets bike tuners adjust air / fuel mixture and ignition timing maps to match engine performance characteristics to the rider and track conditions.  
New for 2011
 New clutch lever and pushrod for more consistent clutch feel during long motos.  
Engine
 The rearward-slanted engine allowed engineers to design straight intake and exhaust ports, creating the most direct path for air flow into the fuel-injected engine for incredible performance.  
 The YZ450F uses a battery-less fuel injection system with a 12-hole injector for superb fuel atomization. The 44 mm Keihin® throttle body is designed for easy starting, with an integrated cold start and idle speed adjustment knob. Yamaha FI provides optimal air / fuel mixtures in all altitudes and wide range of temperatures for outstanding throttle response.  
 14 volt / 110W high output generator powers the battery less fuel injection system.  
 4-titanium valve cylinder head with a "pent-roof" design combustion chamber provides excellent combustion efficiency and unequalled power output.  
 Intake and exhaust camshaft profile changes to increase valve working angle and valve lift for most excellent performance at all rpm.  
 The bigger 97 mm bore and shorter 60.8 mm stroke, along with a higher 12.5:1 compression ratio, create a combustion chamber that delivers really impressive power.  
 The air filter case is changed to accommodate the engine layout. Putting it up front keeps dirt and dust kicked up from the rear tire away from the intake system.  
 "Tornado-style" exhaust header with resonator efficiently scavenges exhaust gasses and helps the engine achieve its exceptional low-to-mid range torque characteristics, while the 150 mm-longer muffler comfortably meets the latest noise standards without a sacrifice of power.  
 Clutch and transmission components have been designed to give the rider great shifting feel.  
Chassis / Suspension
 The aluminum Bilateral Beam frame is crafted from a carefully chosen combination of forged and extruded aluminum, 16 components in all, for the right rigidity balance and light weight. A very symmetrical chassis design promotes nimble handling, letting riders enter and exit corners as quickly as possible to put the competition behind them.  
 Skid plate is constructed from tough polypropylene for great protection and low weight.  
 The swingarm and rear shock are redesigned, with the shock mounted along the central axis of the frame, taking advantage of the space no longer needed for the front-mounted airbox. This optimized combination delivers exceptionally linear performance for excellent bump absorption and awesome cornering ability.  
 The KYB® Speed Sensitive front fork has excellent feel and shock absorption.  
 KYB® rear shock with large capacity piggy back reservoir and 50 mm piston for more consistent damping control.  
 Fuel tank is positioned underneath the seat, contributing to the centralized mass. The seat is long and flat for to allow free rider movement.  
 Rear sprocket shape has a trick appearance and is light weight.  
 The triple clamps are designed, with a change in offset from 25 to 22 mm for unequalled cornering performance. The ProTaper® bars are four-way adjustable to accommodate a wide range of riders.  
 The front and rear fenders, along with the number plate, side cover and front fork protector have been designed for an aggressive look. A minimalistic design is used to accentuate the handling character of the bike. Less plastic is used to expose and enhance the lightweight aluminum frame.  
Additional Features
 Fuel pump is small and lightweight, as is the compact transistor ignition unit.  
 Riders have a choice of two color options: Team Yamaha Blue and White or White and Red.  

Options

 Color Pricing
 Two-tone Team Yamaha Blue / White $8,150  
 Two-tone White / Red $8,250  

Color


Two-tone Team Yamaha Blue / White

Two-tone White / Red
*Price, if shown, is Manufacturer's Suggested Retail Price (MSRP) and does not include government fees, taxes, dealer freight/preparation, dealer document preparation charges or any finance charges (if applicable). MSRP and/or final actual sales price will vary depending on options or accessories selected.

Honda Products
*Suggested Retail Price (SRP) excludes destination charge. Visit powersports.honda.com to view applicable destination charge amount.
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