2013 Kawasaki KX™450F for Sale

Additional Features

• Ribless rear hub and butted spokes offer light weight and excellent durability
• Skid plate made of resin material offers great protection without excess weight
• Rear caliper guard helps protect the caliper from damage
• Clutch cable boot features a large quick adjuster, making it easy for riders to adjust play in the clutch cable on the fly

Aluminum Swingarm

• Uni-Trak® rear suspension linkage is mounted below the swingarm to allow precise tuning and maximum rear suspension stroke
• Tapered “D” shape swingarm is lighter than a comparable box-section unit and provides superior rigidity for its weight
• Features tapered hydroformed spars and forged chain adjusters
• Optional linkage tie rod is 1 mm shorter, creating a 4 mm reduction in seat height
• New swingarm features a larger front casting that extends further down the spars for maximum strength and improved rigidity

At a Glance…

• Revised piston crown improves ultra-low to mid-range engine response
• Adjustable 4-position handlebar and 2-position footpegs allow riders to fit the KX to match their personal preference
• Revised intake cam features slightly less lift, to promote better low-rpm throttle response
• Revised engine tuning offers more power and smoother delivery from basement revs through mid and into the upper rpm range; this provides more thrust while exiting corners and all the way down the straights, while also enhancing rider confidence
• Launch Control improves low-gear acceleration by helping to reduce wheelspin during the run to the first corner
• New longer, lower density grips make life easier on the rider’s hands; they also extend further towards the center of the handlebars, allowing riders to move their hands up to 20 mm closer together
• Black anodized aluminum rims for a factory look
• Pre-programmed ignition maps are interchangeable trackside, no PC required
• New Kayaba Pneumatic Spring Fork (PSF) replaces the main fork springs with compressed air to reduce weight, provide easier and more effective tuning and improve bottoming resistance
• New lightweight 240 mm petal-type rear rotor features the same aggressive petal style as the front rotor and is gripped by a single piston hydraulic rear caliper
• New front master cylinder features a knocker-style lever-to-piston interface for improved feel and more consistent performance than the old piston-type unit

Bridged-box Bottom Piston

• Same design as used on our factory racers; offers optimum performance at all rpm
• Revised piston crown improves ultra-low to mid-range engine response
• Short piston skirt features low-friction coating to minimize mechanical losses
• Lighter and more durable than traditional piston designs
• Reinforced external ribs enhance strength and durability

Close-ratio 5-speed Transmission

• 5-speed transmission and low-rpm engine response combination offers riders more gear options for traversing rough sections or getting into the rhythm of a course easily so they can focus on racing
• Thick first gear offers excellent durability for launching off the line in high-traction situations

Digital Fuel Injection

• 43 mm throttle body uses a progressive throttle linkage to deliver airflow in much the same way as an FCR carburetor
• Ultra-fine atomizing injector with 12 holes sprays particles with a droplet size of 60µ for smooth power delivery and engine response throughout the throttle range
• Using two linked shafts, the throttle body opens more quickly after reaching the 3/8 open position
• Digital Fuel Injection (DFI®) self-adjusts to atmospheric changes for easier starting, sharper throttle response and accessible power for jumping
• Revised airbox flap helps prevent mud and water from entering, but has enlarged access hole to simplify air filter maintenance
• It is not necessary to re-tune, or change any jets to suit climatic conditions like carbureted models
• Fast-idle knob on the throttle body allows riders to increase engine speed when starting a cold engine
• Fuel injector set at 45°, the optimum angle for mid-range power

Easy Starting

• Equipped with an automatic compression release (ACR) system for quick and easy starting; the dual-weight centrifugal decompression system is fitted to the exhaust cam
• Strong output from the large ACG rotor provides enough electrical power for the battery-less FI system to enable true one-kick starting without using a battery
• Compression release features 1 mm of valve lift, to minimize the required kicking power

Efficient Cooling

• High-capacity Denso radiators feature tightly packed cores and a fin design that deliver superior cooling efficiency
• Shroud shape features a slim profile and large cooling outlet hole to help keep excess heat to a minimum
• Radiator louvers feature four small blades set at a shallow angle for minimum overlap and maximum air flow

Engine Overview

• 449 cc liquid-cooled, DOHC, four-stroke single with legendary Kawasaki power
• Compact cylinder head is only 100 mm tall
• A forward lean angle of 3° puts the engine in the ideal position for maximum traction
• Camshafts, lobes and tappet surfaces feature a soft-nitride treatment for long wear and high-rpm reliability
• Works-based Bridged-box Bottom piston has optimum rigidity for maximum high-rpm power and durability
• Double valve springs help ensure stable valve operation and also allow for a short cylinder head height
• Crankshaft and connecting rod feature a special carburizing and quenching treatment to maximize rigidity, boosting long term reliability without adding weight
• Automatic cam chain adjuster is maintenance-free
• Highly balanced crankshaft, on par with Villopoto’s factory racer, creates minimal vibration and has a high inertial mass to help maximize rear wheel traction

Fuel Tank and Lightweight Aluminum Fuel Pump

• Compact 1.6-gallon fuel tank is formed using a blow molding process
• Features a plastic fuel filter cover that wraps around the inlet port and acts as a fuel trap to help ensure a stable fuel supply during vigorous motocross riding
• Fuel pump features a one-piece filter cover and body, eliminating the need for fuel return tube from pressure regulator

High-performance Multi-map ECU

• The system delivers electricity to the bike’s electronics in sequence: first the ECU, then the fuel pump, and finally the injector for quick, easy starting
• Revised ignition timing boosts response when re-opening the throttle after deceleration (when landing jumps, etc.)
• ECU programming is easily selectable via interchangeable DFI coupler caps that provide three preprogrammed maps for Standard, Hard (terrain) and Soft (terrain), without the need for a programming computer
• The engine can be started with only three rotations of the crankshaft using the electricity generated by a single kick of the starter, no battery needed
• The compact, lightweight ECU, located on the front of the steering head behind the number plate, was designed specifically for motocross use; the fuel pump relay is integrated with the ECU to help cope with the shocks and vibrations of tough racing

Launch Control Mode

• Shifting into third gear automatically deactivates Launch Control Mode and returns the ignition to normal mapping
• Push-button activation of the Launch Control Mode retards ignition timing in first and second gears, giving the greatest effect within the first few seconds of releasing the clutch
• Factory-style launch control system increases the ability to get good starts, by maximizing available traction
• Launch Control can be activated in neutral, first or second gear
• System is designed to same specifications as factory Kawasaki AMA machines

Powerful Disc Brakes

• New front brake pads offer a higher coefficient of friction for stronger braking force and enhanced feel
• New front master cylinder features a knocker-style lever-to-piston interface for improved feel and more consistent performance than the old piston-type unit
• New lightweight 240 mm petal-type rear rotor features with the same aggressive petal style as the front rotor and is gripped by a single piston hydraulic rear caliper
• Lightweight 250 mm front rotor is squeezed by a powerful twin-piston caliper and features an aggressive petal design to help clear mud and debris
• New front brake hose is 30 mm longer than last year

PSF Front Fork

• Diamond-Like Carbon (DLC) coating on the outer surface of the inner fork tubes offers minimum stiction when the fork is exposed to lateral forces that would usually hamper slide action; the result is improved fork response, especially during cornering
• New lower triple clamp features integrated locating pins to help simplify installation and removal of the front number plate
• Wrap-around fork tube guards offer effective protection for the sliders
• A removable spring pressure adjustment valve is included to simplify connection of an air pump
• Larger 32 mm diameter internal damping cartridges allow the use of pistons with approximately twice the surface area as last year’s 24 mm AOS damper pistons; this provides more consistent performance and enhances bottoming resistance
• Friction-reducing Kashima Coat on the inside of the fork’s outer tubes contributes to smooth suspension action (especially at the initial part of the stroke)
• Air spring significantly reduces friction and cuts weight by 1.7 lbs. per set, while also providing better bottoming resistance, less oil contamination, plus easier and more effective tuning
• New 48 mm KYB Pneumatic Spring Fork (PSF) eliminates the main fork springs by using compressed air as a spring; the reduced weight and inertia of the air spring improves smoothness and enhances the fork’s ability to follow terrain contours
• New one-piece front fender attachment screws feature integrated grommets to simplify installation and removal

Rear Shock

• KYB rear shock features a large 50 mm piston and a Kashima Coat treatment on the cylinder wall for reduced friction and smoother suspension action
• Rear shock features dual compression adjustability, allowing 22-position high-speed and stepless low-speed damping adjustments to be made independently
• New 33-position rebound damping adjuster allows more precise fine-tuning of the rebound circuit
• Easy adjuster access allows track-side suspension tuning with a minimum of hassle or lost time
• New rear suspension settings have been tuned to compliment the new PSF forks

Rider Interface and Styling

• Slim seat design uses urethane foam designed to retain its original shape and provide optimum durability
• New longer grips are made of lower density material and feature a taller pattern to make life easier on the rider’s hands; the new grips also extend further towards the center of the handlebars, allowing riders to move their hands up to 20 mm closer together
• Slender frame helps the bike feel compact and nimble, but tapers to become wider near the rider’s ankles to offer optimum grip and control
• Blue finishes on suspension adjusters and engine plugs match blue accents in the graphics
• Wide 50 mm footpegs can be adjusted to alternate position, 5 mm lower than stock
• Black triple clamps and black anodized rims – just like Kawasaki’s factory teams
• Dual injected 2-tone, one-piece plastic shrouds and side number plates are compact and lightweight to help mass centralization and enhance rider comfort

Strong and Durable Clutch

• Excellent oil drainage reduces power loss caused by excess oil around the clutch basket
• Clutch case cover features embossed logo and is painted silver, making scuffs and normal wear less noticeable
• Friction plates with substantial friction material contribute to fade resistance and long service life
• Clutch assembly provides a direct feel and superb control of engagement