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$7,399.00

2009 Yamaha YZ450F
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Overview

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    Key Features
    • The bike that started the four-stroke revolution benefits from chassis refinements that ensure the five-titanium-valved YZ450F remains at the head of the open-class pack.
    • Subtle modifications to the suspension mean light, precise, confident handling at any speed.
    • Head and exhaust design delivers stronger low- to midrange power without sacrificing top end power.
    • Ready to race straight out of the crate—with a ProTaper® aluminum handlebar in adjustable clamps, titanium shock spring, gripper seat, Excel rims, etc.
    • Five-speed gearbox provides maximum flexibility and the right gear for a wide range of riding environments.
    • Dry sump lubrication system circulates more oil for the best durability in motocross.
    New for 2009
    • Top triple clamp has two sets of mounting holes, providing 4 handlebar positions to suit a wide variety of riders: standard, 10mm back, or 10mm or 20mm forward.
    • Newly designed swingarm is lighter and helps to achieve excellent rigidity balance for superb cornering and rear wheel traction.
    • Lightweight suspension linkage is redesigned to match the new swingarm.
    • New rear wheel hub is lighter and designed for the larger 25mm diameter axle (up from 22mm), helping to achieve the overall rigidity balance of rear suspension components.
    • New clutch lever is shorter, stronger, and lighter, with a lever position adjuster to accommodate different riders. Quick adjuster makes maintenance easy.
    • Front brake hose clamp is now aluminum, greatly reducing its weight.
    • New seat cover has great grip and more durability, and it’s easy to clean.
    • Premium drive chain has gold colored plates for outstanding looks.
    Engine Features
    • 449cc, five-valve, DOHC, liquid-cooled engine is super-powerful yet tractable.
    • 39mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) and leak jet delivers precise fuel/air mixture and instant throttle response.
    • Lightweight titanium valves and load-reduced springs minimize reciprocating mass for fast-revving, hard-hitting power delivery across the rev range.
    • Primary kickstarting with automatic decompression and convenient, handlebar-mounted hot start lever ensures easy restarts.
    • Large-capacity radiator is reinforced for greater strength.
    Chassis/Suspension
    • Extensively tested aluminum frame uses a mix of alloy castings, forgings and extrusions to produce a tuned-flex frame that makes the YZ the finest-handling motocross bike ever.
    • Speed-Sensitive System 48mm KYB® fork damping force is controlled by piston speed: provides a smoother, more precise ride.
    • Titanium-sprung, four-way adjustable rear shock with Kashima-coated internals reduces friction for fantastic compliance and great handling.
    • More weight savings come via two-piece (part aluminum, part plastic) engine protector plates and thin-walled engine guard construction.
    • Removable aluminum rear subframe constructed of square-section tubing for light weight and easy maintenance.
    • Lightweight front-wheel hub for reduced unsprung weight and increased durability.
    • Lightweight front- and rear-brake calipers with aluminum pistons and anti-bubble front master cylinder; wave-style rotors reduce unsprung weight and deliver strong stopping power.
    Additional Features
    • Wide (55mm) footpegs provide excellent boot traction and rider comfort.
    • ProTaper® aluminum handlebar for strength and performance.
    • Works-style clutch lever features oversize barrel adjuster for easy, on-the-fly adjustability of lever/cable play.
    • Repackable exhaust silencer.
    Engine
    • Type: 449 cc liquid-cooled DOHC 4-stroke; 5 titanium valves
    • Bore x Stroke: 95.0 x 63.4 mm
    • Compression Ratio: 12.3:1
    • Carburetion: Keihin FCR MX39
    • Ignition: CDI
    • Transmission: Constant-mesh 5-speed; multiplate wet clutch
    • Final Drive: Chain Drive
    Chassis
    • Suspension/Front: Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel
    • Suspension/Rear: Fully adjustable single shock; 12.3-in travel
    • Brakes/Front: Hydraulic single disc brake, 245 mm
    • Brakes/Rear: Hydraulic single disc brake, 245 mm
    • Tires/Front: 80/100-21-Dunlop 742FA
    • Tires/Rear: 120/80-19-Dunlop 756
    Dimensions
    • Length: 86.4 in.
    • Width: 32.5 in.
    • Height: 51.4 in.
    • Seat Height: 38.9 in.
    • Wheelbase: 58.8 in.
    • Ground Clearance: 14.7 in.
    • Fuel Capacity: 1.8 gal.
    • Wet Weight: 238 lbs.
    Warranty
    • Warranty: 30 Day (Limited Factory Warranty)

    Specifications

    Engine
    Engine Type 449 cc liquid-cooled DOHC 4-stroke; 5 titanium valves
    Displacement 449 cc
    Bore and Stroke 95.0 x 63.4 mm
    Cooling Liquid
    Compression Ratio 12.3:1
    Fuel System Keihin FCR MX39
    Ignition CDI
    Chassis
    Front Suspension Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel
    Front Brakes Hydraulic single disc brake, 245 mm
    Front Tire 80/100-21-Dunlop 742FA
    Rear Suspension Fully adjustable single shock; 12.3-in travel
    Rear Brakes Hydraulic single disc brake, 245 mm
    Rear Tire 120/80-19-Dunlop 756
    Dimensions
    Dry Weight 238 lbs.
    Fuel Capacity 1.8 gal.
    Wheelbase 58.8 in.
    Ground Clearance 14.7 in.
    Seat Height 38.9 in.
    Transmission
    Transmission Constant-mesh 5-speed; multiplate wet clutch
    Final Drive Chain Drive
    General
    Colors Team Yamaha Blue/White; White/Red
    Warranty 30 Day (Limited Factory Warranty)

    Compare Models

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    Year 2009    
    Manufacturer Yamaha    
    Model YZ450F    
    Style Motocross    
    MSRP* $7,399.00    
    Chassis
    Front Suspension Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel    
    Front Brakes Hydraulic single disc brake, 245 mm    
    Front Tire 80/100-21-Dunlop 742FA    
    Rear Suspension Fully adjustable single shock; 12.3-in travel    
    Rear Brakes Hydraulic single disc brake, 245 mm    
    Rear Tire 120/80-19-Dunlop 756    
    Dimensions
    Dry Weight 238 lbs.    
    Fuel Capacity 1.8 gal.    
    Wheelbase 58.8 in.    
    Ground Clearance 14.7 in.    
    Seat Height 38.9 in.    
    Trail      
    Rake      
    Engine
    Engine Type 449 cc liquid-cooled DOHC 4-stroke; 5 titanium valves    
    Displacement 449 cc    
    Bore and Stroke 95.0 x 63.4 mm    
    Cooling Liquid    
    Compression Ratio 12.3:1    
    Fuel System Keihin FCR MX39    
    Ignition CDI    
    General
    Colors Team Yamaha Blue/White; White/Red    
    Warranty 30 Day (Limited Factory Warranty)    
    Transmission
    Transmission Constant-mesh 5-speed; multiplate wet clutch    
    Final Drive Chain Drive    

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