Kawasaki KLX450R 2009

2009 KAWASAKI KLX450R, Off-road warrior is nimble, quiet, fast, and easy-to-ride. Kawasaki’s 2009 KLX450R may have inherited the lightweight engine and chassis from the multiple championship winning KX450F motocrosser, but it is much more than a high-strung racer with a headlight and 18 inch rear wheel. Designed for the rigors of the off-road world, the KLX450R delivers a widespread of power with high-traction torque and superior throttle control, combined with the enhanced durability, comfort, and long range that’s required in unforgiving off-road environments.

Ultra-powerful 449cc Liquid-cooled, Four-stroke Single 

- 449cc liquid-cooled, four-stroke single with four valves 

- Features superb low and mid-range power delivery 

- Linear power curve offers plenty of over-rev, for maximum flexibility in choosing shift points 

- Cam lift and timing boost low- and mid-range torque 

- Camshaft lobes and tappets feature a soft-nitride surface treatment for long wear and high-rpm reliability 

- Hand-finished surfaces of the polished intake ports improve intake efficiency at all rpm 

- Lightweight 36mm titanium intake valves and aluminum valve retainers reduce reciprocating weight for reliable valve control at high rpm 

- 30mm steel exhaust valves for improved durability 

- Double valve springs help ensure stable valve operation 

- Screw-type automatic cam chain tensioner with oil pressure spring 

- Low-friction coating on piston skirt 

- Extra flywheel mass provides ultra-smooth engine power delivery 

- Crankshaft and connecting rod are sintered for additional rigidity 

- Crankshaft, rotor mass centralization, oil circulation, and ignition timing designed for ideal engine braking characteristics

Exhaust 

- Large 41mm titanium exhaust header for maximum power 

- Tapered exhaust pipe joint helps increase ultra-low rpm power. 

- Titanium exhaust pipe heat shield 

- Silencer uses long-fiber packing for lower maintenance

Cooling 

- High-capacity Denso radiators deliver superior cooling efficiency 

- A reservoir tank is fitted to the radiator, for efficient cooling during long enduros 

- Slim radiators feature tightly packed cores and fins designed to enhanced heat dispersion 

- The radiator shroud design is optimised for a seated position

Electric Starting 

- High-capacity starter motor is compact, yet offers high-output to help ensure quick and reliable starts under all conditions 

- Lightweight battery is located under the seat and behind the airbox for optimum mass centralization 

- Having both electric and kick starters means the KLX450R can be quickly restarted if the engine stalls during an event 

- Features highly reliable auto-decompression system; the dual-weight centrifugal decompression system fitted to the exhaust cam eases starting, and its simple construction helps to ensure reliability

Wide-Ratio Five-Speed Transmission 

- Features ratios selected="true"="true"="true"="true"="true"="true" specially for off-road racing 

- The transmission's gears are designed for high durability 

- Ball bearing shift lever for smoother shifting 

- Ratchet-type shift mechanism for smoother shifting and a more positive feel

Frame 

- Lightweight all-aluminum perimeter frame is a composite structure comprising forged, extruded and cast components 

- Slim frame profile, two-piece radiator shrouds, and careful bodywork design make the KLX450R feel light and narrow beneath the rider 

- Aluminum skid plate

Front Suspension 

- Fork tuning is optimized for light, easy handling characteristics 

- Kayaba AOS (Air-Oil-Separate) fork keeps oil and air in separate chambers for stable damping performance during long rides 

- Large front fork damper cartridges offer a more progressive and plush action 

- Low-friction fork seals help reduce stiction

Rear Suspension 

- Uni-Trak® rear suspension system mounts the suspension arm below the swingarm, allowing a longer rear suspension stroke. 

- Rear shock features dual compression adjustability, allowing high-speed and low-speed damping to be tuned separately 

- Alloy swingarm uses cast front section, tapered hydroformed spars and forged chain pullers; the tapered spars are shaped to match the balance of flex and rigidity required of the aluminum frame 

- Sprocket style chain roller reduces drive lash

Brakes 

- Petal brake discs front and rear, help reduce unsprung weight and clean the brake pads for more efficient braking performance

18” Rear Wheel 

- Durable 18” rear wheel allows fitment of a wide selection of off-road tires

From the Cockpit 

- Renthal aluminum handlebars are standard 

- Lightweight short-length grips feature a special pattern to reduce vibration transmitted from the bars to the rider 

- Seat is wider than the KX450F's for additional comfort during long enduros 

- Seat uses a slip-resistant top surface for good grip when seated and smooth sides for excellent rider mobility 

  

Off-road racing equipment 

- Lightweight digital instrumentation includes a speedometer, twin tripmeter, odometer and clock 

- Lightweight 2.1 gallon fuel tank is constructed to meet strict U.S. environmental regulations 

- Gas tank petcock is fitted with a reserve pickup 

- Compact lighting package includes a 35 W headlight with lightweight plastic lens 

- Ultra-compact and energy efficient LED tail light 

- Two-piece construction of the left-side cover with a special “door” for easy access to the air filter 

- Engine guards protect both sides of the engine 

- Includes an aluminum skid plate for added protection from rocks and ledges 

- Sealed chain and a side stand are fitted as standard equipment 

- California models feature a secondary air system to enable them to meet strict emissions regulations.

Source: Kawasaki