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$7,099.00
$4,759.00
$2,340.00

2007 Yamaha YZ450F

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Now until September 30, 2010
$2,340.00 Off Store Price
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Overview

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The bike that started the four-stroke revolution benefits from significant chassis and engine refinements, providing improved power delivery, handling and the edge that can keep you on the podium.

    Key Features
    • For 2007, the bike that started the four-stroke revolution benefits from significant chassis and engine refinements that ensure the five-titanium-valved YZ450F remains at the head of the open-class pack.
    • Modifications to the light and strong aluminum frame and suspension mean light, precise, confident handling at any speed.
    • Five-speed gearbox provides maximum flexibility and the right gear for a wide range of riding environments.
    • Ready to race straight out of the crate - with a ProTaper aluminum handlebar in adjustable clamps, titanium shock spring, ti footpegs, gripper seat, etc.
    New for 2007
    • Replacing the upper cast triple clamp with a light and strong forging, slightly reducing steering head rigidity, and the use of lighter outer fork tubes; lighter wheel rims and light wave-type brake rotors add up to super-accurate, super-responsive steering.
    • Increasing the length of the rear shock by 1.5mm further sharpens handling. Replacing steel damping adjusters with aluminum ones removes even more weight from the four-way adjustable, titanium-sprung rear suspension unit.
    • A more rigid clutch pressure plate helps put power to the ground and dissipates heat more efficiently, especially during partial-clutch operation. Shorter lever stroke with 12-percent reduced effort means instant response.
    • New, titanium exhaust pipe fattens low- and mid-range power while simultaneously adhering to 2007 AMA noise regulations.
    • This year's ProTaper aluminum handlebar bend raises the grips 8mm for an expanded cockpit. Forged bar clamps reduce weight for superior handling.
    Engine
    • 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.
    • Revised CDI ignition keeps that amazingly broad and deep powerband hard-hitting, yet controllable.
    • Lightweight, titanium valves and load-reduced springs minimize reciprocating mass for fast-revving, hard-hitting power delivery across the rev range.
    • Additional weight-saving engine features include: small-design cam chain tensioner and oil pump, aluminum oil hose, all-titanium exhaust header, flange, bracket and heat shield and light CDI ignition unit.
    • Primary kickstarting with automatic decompression and convenient handlebar-mounted hot start lever ensures easy restarts.
    • Kick pinion gear is separate from the primary driven gear for smoother clutch engagement.
    • Large-capacity radiator is reinforced for greater strength.
    Chassis/Suspension
    • Aluminum frame uses a mix of alloy casting, forgings and extrusions to produce a tuned-flex frame that makes the YZ the finest handling motocross bike ever.
    • Speed-Sensitive System 48mm Kayaba fork places transfer control valves (TCV) above the fork springs, so that damping force is controlled by piston speed; Eliminating mid-stroke damping force changes provides a smoother, more precise ride.
    • Titanium-sprung four-way adjustable rear shock with Kashina-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 - lighter fasteners for 2007 enhance weight distribution and handling.
    • Lightweight front wheel hub for reduced unsprung weight and increased durability.
    • Premium Dunlop knobbies provide unbeatable, competition-spec traction and great wear.
    • Lightweight 21-inch front and 19-inch rear Excel rims are exceptionally durable and reduce unsprung weight.
    Additional Features
    • “Gripper” style seat cover gives excellent feel and control, and the seat is lighter for 2007.
    • Wide, cleated, folding titanium footpegs are light, strong, and provide excellent comfort, grip and ground clearance.
    • Works-style clutch lever features oversize barrel adjuster for easy, on-the-fly adjustability of lever/cable play.
    • Cleated rear brake lever and folding shift lever tip offer superb grip and excellent durability.
    • Repackable exhaust silencer.
    • Durable, comfortable handlebar grips.
    • Stainless steel clutch cable for longer life.
    Engine Specifications
    • Type: 449cc, liquid-cooled, 4-stroke, DOHC, 5-valve
    • Bore x Stroke: 95 x 63.4mm
    • Compression Ratio: 12.3:1
    • Carburetion: FCR-MX39 x 1
    • Ignition Digital: CDI
    • Transmission: Constant mesh 5-speed/wet, multiple-disc
    • Final Drive: Chain Drive
    Chassis Specifications
    • Suspension/Front: Telescopic Fork, coil spring/oil damper, 11.8" (300 mm) travel
    • Suspension/Rear: Swingarm (link, suspension), coil spring/gas-oil damper, 12.4" (315 mm) travel
    • Brakes/Front: Hydraulic single disc brake, 250mm
    • Brakes/Rear: Hydraulic single disc brake, 245mm
    • Tires/Front: 80/100-21-51M
    • Tires/Rear: 110/90-19-62M
    Dimensions
    • Length: 86.3" (2192 mm)
    • Width: 32.5" (815 mm)
    • Height: 51.4" (1298 mm)
    • Seat Height: 38.9" (986 mm)
    • Wheelbase: 58.8" (1495 mm)
    • Ground Clearance: 14.7"
    • Dry Weight: 220 lb. (99.8 kg)
    • Fuel Capacity: 1.8 gal. (7 l)
    Other
    • Main Jet: #160
    • Main Air Jet: #200
    • Jet Needle: NFLR-4
    • Needle Jet: NA
    • Pilot Air Jet 1: #100
    • Pilot Outlet: 0.9
    • Pilot Jet: #45
    • Primary Reduction Ratio: 61/23 (2.652)
    • Secondary Reduction Ratio: 49/13 (3.769)
    • Gear Ratio - 1st Gear: 27/14 (1.929)
    • Gear Ratio - 2nd Gear: 23/15 (1.533)
    • Gear Ratio - 3rd Gear: 23/18 (1.278)
    • Gear Ratio - 4th Gear: 24/22 (1.091)
    • Gear Ratio - 5th Gear: 20/21 (0.952)
    • Warranty: 30 Day (Limited Factory Warranty)

    Specifications

    Engine
    Engine Type 4-stroke, DOHC, 5-valve
    Displacement 449 cc
    Bore and Stroke 95 x 63.4 mm
    Cooling Liquid-cooled
    Compression Ratio 12.3:1
    Fuel System FCR-MX39 x 1
    Ignition Digital CDI
    Chassis
    Front Suspension Telescopic Fork, coil spring/oil damper, 11.8" (300 mm) travel
    Front Brakes Hydraulic single disc brake, 250mm
    Front Tire 80/100-21-51M
    Rear Suspension Swingarm (link, suspension), coil spring/gas-oil damper, 12.4" (315 mm) travel
    Rear Brakes Hydraulic single disc brake, 245mm
    Rear Tire 110/90-19-62M
    Dimensions
    Dry Weight 220 lbs. (99.8 kg)
    Fuel Capacity 1.8 gal. (7 l)
    Wheelbase 58.8 in. (1495 mm)
    Ground Clearance 14.7 in.
    Seat Height 38.9 in. (986 mm)
    Transmission
    Transmission Constant mesh 5-speed/wet, multiple-disc
    Final Drive Chain Drive
    General
    Colors Team Yamaha Blue/White, White/Silver
    Warranty 30 Day (Limited Factory Warranty)

    Compare Models

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    Year 2007    
    Manufacturer Yamaha    
    Model YZ450F    
    Style Motocross    
    MSRP* $6,999.00    
    Chassis
    Front Suspension Telescopic Fork, coil spring/oil damper, 11.8" (300 mm) travel    
    Front Brakes Hydraulic single disc brake, 250mm    
    Front Tire 80/100-21-51M    
    Rear Suspension Swingarm (link, suspension), coil spring/gas-oil damper, 12.4" (315 mm) travel    
    Rear Brakes Hydraulic single disc brake, 245mm    
    Rear Tire 110/90-19-62M    
    Dimensions
    Dry Weight 220 lbs. (99.8 kg)    
    Fuel Capacity 1.8 gal. (7 l)    
    Wheelbase 58.8 in. (1495 mm)    
    Ground Clearance 14.7 in.    
    Seat Height 38.9 in. (986 mm)    
    Trail      
    Rake      
    Engine
    Engine Type 4-stroke, DOHC, 5-valve    
    Displacement 449 cc    
    Bore and Stroke 95 x 63.4 mm    
    Cooling Liquid-cooled    
    Compression Ratio 12.3:1    
    Fuel System FCR-MX39 x 1    
    Ignition Digital CDI    
    General
    Colors Team Yamaha Blue/White, White/Silver    
    Warranty 30 Day (Limited Factory Warranty)    
    Transmission
    Transmission Constant mesh 5-speed/wet, multiple-disc    
    Final Drive Chain Drive    

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