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The All New 2003 Kawasaki KLX400R on 4Strokes.com
4Strokes.com Kawasaki Related Articles: The All New 2003 Kawasaki KLX400R

The All New 2003 Kawasaki KLX400RIt’s no secret that the popularity of mid-sized, four-stroke off-road motorcycles is at an all time high, so adding an aggressive no-holds-barred electric start thumper to the Kawasaki off-road family was a no-brainer. That’s where the new Kawasaki KLX400R motorcycle comes in – a powerful yet agile 398cc four-stroke packaged in a lightweight and durable chassis.  Built to either conquer the toughest enduro trails or provide a leisurely trail ride, the KLX400R will get the adrenaline pumping.

One push of a button fires up the KLX400R’s engine, via a lightweight starter motor. The responsive power stems from a double overhead cam, four valve, liquid-cooled dry-sump engine that boasts rapid throttle response at all rpm. A nickel-silicon-phosphorous-plated cylinder provides excellent heat transfer properties and is host to a forged aluminum piston, which receives oil cooling through a crankcase oil jet. A twist of the throttle demonstrates that torque is on-tap from the low-end to the mid-range, and continues all the way up the powerband. Crisp and quick throttle response is provided by a Keihin FCR39 carburetor, which drinks from a long-range 2.6-gallon fuel tank.

For easy maintenance, a cable-operated clutch with a separate outer cover operates with the compact five-speed transmission. Equipped with a gear for any off-road situation, the KLX400R’s transmission can handle anything from tight, sandy or rocky terrain to high-speed hard pack.

Wrapped around the responsive engine is an equally responsive chassis. With a dry weight of just 249 pounds, the KLX400R is slim, nimble and easy to throw around the trail. Bolted to the chrome-moly steel frame is an aluminum subframe that provides a skeleton for a smooth transition between tank, seat and bodywork. Giving the KLX400R a plush ride is the 49mm long-travel cartridge fork, which features rebound damping and adjustable spring preload. A lightweight aluminum swingarm and rear shock with high/low-speed rebound and compression damping adjustability complement the fork and overall chassis package.  Prime stopping power comes from front and rear hydraulic disc brakes.

Finishing touches to the KLX400R include off-highway lighting via a 55-watt headlight and LED-type taillight, durable steel footpegs, aluminum rims and hubs and a U.S. Forestry-approved spark arrestor.

2003 Kawasaki KLX400R Specifications (Suggested Retail: $5,499 USD)

Dimension and Dry Mass
Overall length: 88.0 in.
Overall width: 32.5 in.
Overall height: 49.0 in.
Wheelbase: 58.0 in.
Ground clearance: 12.8 in.
Seat height: 37.2 in.
Dry mass: 262 lbs.
Transmission
Transmission: 5-speed
Capacities
Fuel tank: 2.6 gal.
Chassis
Frame: High-tensile steel, perimeter design
Front suspension: 49mm cartridge-style fork, 14-way comp, 18-way rebound
Rear suspension: Fully adj link-type, high/low speed comp and rebound adj
Wheel travel, front / rear: 11.3 in. / 11.6 in.
Rake / Trail: 27.6 degrees / 4.5 in.
Brake, front / rear: Hydraulic disc / disc
Tire size, front / rear: 80/100 x 21 / 100/100 x 18
Engine
Type: 398cc, liquid cooled, 4-stroke DOHC 4-valve single
Bore / Stroke: 90 mm / 62.6 mm
Compression ratio: 12.2:1
Carburetor: Keihin FCR39
Ignition type: Digital CDI

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