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The “leading edge” answer to purist demands

Kawasaki Motor Corp.The popular 400cc sport all-terrain vehicle (ATV) class appeals to riders who want the leading edge of power, performance and exhilaration. These competitive riders are purists who will accept nothing less than a manual transmission for maximizing engine acceleration, demand powerful braking performance and typically choose the
fastest line through a turn.

Kawasaki’s answer to this high-performance demand is the KFX®400 sport ATV. The KFX400 is powered by a 398cc, liquid-cooled, four-stroke engine featuring double overhead cams and four valves atop a chrome composite-plated aluminum alloy cylinder. Fed by a new 37mm high-performance carburetor, it includes electric start and has a counter balancer to reduce vibration.

The KFX400 engine utilizes a “dry sump” design, with the engine oil being carried in the tubes of the high-performance chassis instead of the traditional location beneath the engine. This design enabled engineers to shorten overall engine height so it can be placed lower in the chassis for enhanced stability while providing higher ground clearance.

Transmitting power from the engine to the rear wheels is a high-performance five-speed-plus-reverse manual transmission and efficient O-ring chain. A high-performance powerband requires an equally advanced chassis, so the KFX400 ATV engine rides in a high-tensile steel frame and subframe. Suspension duties are handled by dual front A-arms with new fully adjustable shocks that provide 8.5 inches of travel, while an aluminum-alloy swingarm with fully adjustable shock provides 9.1 inches of travel on the rear. Contributing to the KFX400’s low, 373-pound dry weight are competition-inspired aluminum-alloy wheels, and stopping power is provided by dual front disc brakes and a single rear disc brake.

As with all off-highway vehicle recreation, Kawasaki encourages ATV riders to ride responsibly and to respect the environment. Kawasaki will pay first-time buyers of a new Kawasaki ATV $100 for completing an ATV rider safety course conducted by the ATV Safety Institute (ASI). Interested consumers can call ASI toll-free at 800-887-2887.

Information about Kawasaki’s complete line of recreational products and Kawasaki affiliates can be found on the Internet at

Features and Benefits

  • High-performance four-stroke engine delivers exceptionally broad torque curve for maximum traction for a variety of sport-riding conditions

  • Twin air intakes on the front fenders provide extra cooling to the radiator

  • Dry-sump lubrication allows the engine to be kept low in the chassis for superior weight distribution and handling while providing higher ground clearance

  • New 37mm carburetor increase engine performance

  • Electric start makes competition holeshots a breeze

  • Five-speed manual transmission helps the rider keep the engine in the powerband; reverse gear makes backing up convenient and easy

  • Efficient chain final drive provides maximum power to the rear wheel

  • Swingarm utilizes eccentric chain adjusters, making chain adjustment easier

  • Dual A-arm front suspension and rear swingarm help to soak up the bumps and jumps

  • New front shocks feature fully adjustable compression and rebound damping as well as adjustable preload for more suspension tuning options

  • Triple disc brakes provide exceptional stopping power

  • Dual halogen headlights brighten the path for nighttime riding

  • Serrated steel footpegs help to keep the rider’s feet from slipping in wet or muddy riding conditions

  • Available in Blazing Orange for 2005


  • Engine: Liquid-cooled, four-stroke, single cylinder with DOHC and four-valves with dry-sump lubrication system

  • Displacement: 398cc

  • Carburetion: Mikuni BSR37

  • Starting: Electric

  • Transmission: Five-speed-plus-reverse manual, multi-plate wet clutch

  • Final drive: #520 O-ring chain

  • Frame type: High-tensile tubular steel alloy

  • Suspension
    Wheel travel Dual A-arms with coil-over-shock, adjustable preload/8.3 in.
         Rear: Wheel travel Swingarm with preload-adjustable shock/9.1 in.

  • Tires
    22 x 7-10 radial
         Rear: 20 x 10-9 radial

  • Brakes
    Dual hydraulic discus
         Rear: Disc

  • Overall length: 72.0 in.

  • Overall width: 45.9 in.

  • Wheelbase: 49.0 in.

  • Ground clearance: 10.4 in.

  • Lighting: Dual 30W halogen

  • Dry weight: 373 lbs.

  • Fuel capacity: 2.6 gal.

  • Footpegs: Serrated steel

  • Color: Blazing Orange, Kawasaki Lime Green

*Specifications are subject to change. Please visit for most current specifications.

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