2011 Kawasaki KX™250F for Sale

Additional Features

• Large front brake lever boot offers increased protection against debris
• Newly designed and more durable chain guide utilizes a thicker wear pad for longer life
• Large resin skid plate offers great protection with minimum weight

Bridged-box Bottom Piston

• Light and strong piston shares same design as the factory racers, with a revised crown for higher compression. Also features fully flush internal bracing.
• Short piston pin reduces reciprocating weight

Digital Fuel Injection (DFI) System

• Improves engine response across entire rpm range
• Same basic system that’s fitted to the KX450F
• Prevents engine hesitation after landing from jumps and other high-impact situations
• Offers easy engine starting
• Simple and efficient system: No battery, fuses or relays
• 43 mm throttle body assembly with 20 percent higher-flow injector than the KX450F’s injector
• Progressive throttle link; opens more quickly after 3/8 open position
• Intake airflow is higher than on carburetor-equipped 2010 model

Efficient Cooling System

• Cylinder head water jacket routes coolant to the front of the cylinder head for even cooling
• Thick and wide radiators are strong and offer excellent resistance to mud buildup while providing superb cooling performance

Enhanced Durability and Reliability

• Oil pump rotors offer a high degree of reliability and durability; a large feed pump rotor maximizes oil flow, while a smaller scavenge-pump rotor reduces mechanical losses
• Electrofusion treatment on cylinder bore improves surface oil retention, while the molybdenum coating on the cylinder bore surface helps resist scorching, further contributing to durability
• Wide big-end bearing features a thick copper plate on its cage and a long crank pin for increased reliability

Factory-style Components

• Black alumite-coated rims, just like the factory racers
• Thick and rigid front fender
• Rear brake pad material offers powerful braking performance
• Rear caliper guard protects caliper from damage
• Factory-style graphics complement the KX250F’s highly tuned performance
• Lightweight rims offer maximum strength and weight savings
• Renthal aluminum handlebar is standard equipment
• Front and rear petal brake discs help reduce unsprung weight, and the wave shape helps clean the brake pads for more efficient braking performance
• Ribless rear hub and butted spokes further reduce unsprung weight

Higher Performance, High-revving Engine

• Crank web design features a balance factor on par with the factory racers for reduced engine vibration, smoother power delivery and increased performance in the mid-high rpm range
• Sprocket-style chain drive roller helps reduce the effect of driveline lash and engine braking for smoother and faster corner entries
• Race-experienced riders able to harness high-rpm performance that extends way into the over-rev
• Digital Fuel Injection (DFI) system allows consistent fuel delivery, quick starts and easy adjustability
• Intake valve spring tension increased to control more radical cam timing
• 249 cc, liquid-cooled, four-stroke, four-valve, single-cylinder DOHC engine delivers hard-hitting power across the rpm range
• Modified intake valve timing and cam profile for increased valve lift improves high-rpm power production
• Engine tuned to achieve the widest possible torque band to maximize traction through a greater percentage of the rev range

Lightweight and Efficient Top End

• Ultra-light valves have extremely thin valve stems on par with those found in supersport machines; intake valves feature thick heads for increased strength
• Special coating applied to intake port cores during casting gives the intake ports extremely smooth surfaces and optimum intake efficiency across the rev range
• Silicon-coated head gasket provides excellent sealing
• Intake ports designed for peak performance at all rpm, especially in the high-rpm range
• Lightweight, highly rigid, titanium 31 mm intake and 25 mm exhaust valves reduce reciprocating weight and offer high-rpm reliability

New Stainles Steel Exhaust System

• Longer header pipe section for improved low and mid-range response
• Joint between pipe and muffler offers excellent sealing, while a rubber damper collar on the rear silencer mount equals serious durability
• Stainless steel construction offers extra durability
• Higher-volume muffler assembly quiets emissions to 94 dB noise regulations while retaining power production

Quick-turning Chassis

• The KX250F’s slim and lightweight aluminum perimeter frame is composed of forged, extruded and cast parts
• Utilizes a low-rigidity steering stem for lighter handling
• Upper engine mounts on head cover sides increase overall rigidity
• Center of gravity and key dimensions such as swingarm pivot, output sprocket and rear axle locations designed to increase forward drive with minimal rear-end squat

Race-oriented Suspension

• New Separate Function Fork (SFF) separates springing and damping functions for less weight, better performance, less friction and easier adjustability
• Rear shock features dual compression adjustability, allowing high-speed and low-speed damping to be tuned separately
• Fork now allows external spring preload adjustability
• Super-hard titanium coating on the outer surface of the inner fork tubes reduces friction and improves suspension action. The increased surface hardness also helps prevent scratches and tube damage.
• Wrap-around fork tube guards provide greater protection for the inner tubes
• Friction-reducing Kashima coat treatment on the inside of the outer fork tubes contributes to smoother suspension action
• Revised shock damping settings offer increased absorption performance and greater stability on corner entry thanks to reduced rear-end kicking
• Revised race-oriented suspension damping settings optimize front / rear balance
• Features Kashima coat on the inside of the shock reservoir for reduced friction and smoother suspension action

Rider Interface

• Formed using a double-injection molding process, the two-tone shrouds offer a slim design
• Lightweight short-length grips feature a pattern designed to provide excellent grip
• Clutch cable boot features a large quick adjuster, making it easy for riders to adjust play in the clutch cable while on the fly
• 50 mm wide (front-to-rear) footpegs offer superb grip and feel at the pegs
• Right side panel has an added passageway to help cool the silencer
• Throttle grip has a one-piece collar that provides additional stability during throttle operation
• Bodywork components offer the rider a slim interface, making it easy for racers to feel comfortable and go fast
• Frame is wider at the ankles to offer better grip and narrows near the bend below the seat to allow a slim riding position
• Slim seat features firm urethane, which keeps its original shape longer
• Side number plates also two-toned and contribute to the slim package
• Seat has a slip-resistant top and side surface for good grip when seated and while standing

Superior Rear-wheel Traction

• Linkage ratios for the Uni-Trak rear suspension match rear shock damping settings to achieve maximum rear wheel traction
• Uni-Trak® rear suspension system mounts the suspension arm below the swingarm, allowing more rear suspension stroke and precise tuning
• Alloy swingarm uses a cast front section, tapered hydroformed spars and forged chain adjusters
• Swingarm features optimum internal bracing and flex characteristics for improved cornering performance

Transmission and Shifting Reliability

• Scavenge oil filter screen can be accessed without splitting the crankcases, facilitating easier maintenance
• Revised ratchet and lever angle for more positive shifting
• Strong, beefy crankcases feature additional material around the engine mounts to help increase long-term durability
• New 50-tooth rear sprocket helps capitalize on the engine’s torque delivery
• Third and fourth input gears have large dogs to help prevent wear
• Revised internal ratios for second and fourth gear better match new engine power delivery
• Clutch cable holder is integrated with the crankcase for accurate feel at the clutch lever