2014 Kawasaki KX™250F

Additional Features

• Radiator shrouds and side panels provider a slim rider interface and a nimble feel
• Embossed design on clutch cover
• High-density chain pad on top of the swingarm is more resistant to wear
• Large resin skid plate offers great protection with minimum weight

At a Glance…

• Launch Control is a first for the 250 class and increases ability to get good starts, by maximizing available traction
• Showa Separate Function Fork (SFF) provides progressive damping force and features 48 mm inner fork tubes for rigidity
• Dual injector Digital Fuel Injection (DFI®) system
• High-rpm engine output extends deep into the overrev
• High-tensile steel front engine mount plates are 29% thinner than last year’s steel plates and offer a better mix of chassis rigidity, improved feedback and superior front-end grip
• Transmission gears feature four dogs instead of three, for enhanced shift smoothness
• Shift-fork grooves are more-direct to enhance feel at the shift lever
• Counter-shaft and sprocket retainer design now uses a nut and washer instead of a clip, for a more positive sprocket–to–countershaft interface and simplified sprocket swaps
• Upgraded crankcase oil jet delivers an optimized stream of oil to the underside of the piston, for enhanced cooling
• Revised throttle body tuning improves airflow from a closed-throttle, for a smoother idle and enhanced low-end response
• Revised piston tuning in the left fork leg enhances damping performance through the initial and mid-stroke
• Revised rear shock settings provide a more comfortable “baseline” for a wide range of riders
• Grips feature shorter barrels and are made from a softer material to enhance rider comfort

Bridged Box-bottom Piston

• Piston profile helps increase reliability compared to non-box-bottom design
• Light and strong piston shares same design as the factory racers, and a tin plating to optimize its interface with the nickel plating on the cylinder wall
• Special finish improves surface lubrication and wear resistance
• Short piston pin reduces reciprocating weight

Digital Fuel Injection (DFI) System

• Intake tract designed to provide optimal airflow from the airbox into the combustion chamber
• Seal between air inlet port and throttle position sensor unit on the 43 mm throttle body protects TPS sensor from fuel penetration
• Progressive throttle linkage for sharp and precise throttle response across entire rpm range
• Simple and efficient system: No battery, fuses or relays
• Offers easy engine starting
• Helps prevent engine hesitation after landing from jumps and other high-impact situations

Efficient Cooling System

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

Factory-style Components

• Pushrod-type front brake master cylinder and brake pad material provide strong brake force and enhanced feel
• Rear brake pad material offers powerful braking performance
• Lightweight black anodized rims are durable and look just like the factory racers
• Titanium-coated inner fork tubes minimize stiction and look great
• Front and rear petal brake discs help reduce unsprung weight, and the wave shape helps clean the brake pads for more efficient stopping performance
• Rear caliper guard protects caliper from damage
• Ribless rear hub and butted spokes reduce unsprung weight
• Renthal aluminum handlebar is standard equipment
• Blue ignition cover plugs and oil filler cap match the blue accents on the factory race bikes
• Factory-style graphics complement the KX250F’s highly tuned performance

Factory-style Launch Control System

• Launch Control is a first for the 250 class and increases ability to get good starts, by maximizing available traction
• Launch Control is activated by pushing a button on the left handlebar while stopped, in neutral, first or second gear
• Retards ignition timing in first and second gears, giving the greatest effect within the first few seconds of releasing the clutch
• Shifting into third gear automatically deactivates Launch Control Mode and returns the ignition to normal mapping
• Particularly effective when chasing the holeshot from concrete starting pads and other slippery surfaces

High-revving, High Performance Engine

• 249 cc, liquid-cooled, 4-stroke, 4-valve, single-cylinder DOHC engine delivers hard-hitting power across the rpm range
• Nickel plating on the cylinder wall has a high adhesion factor for optimum durability
• Thick-stem connecting rod resists flex and enhances durability
• Upgraded crankcase oil jet delivers an optimized stream of oil to the underside of the piston, for enhanced cooling
• Thick crank web design features a balance factor on par with the factory racers to help minimize engine vibration, provide smooth power delivery and maximize performance in the mid-high rpm range

Lightweight and Efficient Top End

• Intake valve seat material offers increased durability
• 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 casting method leaves the intake port surfaces extremely smooth for optimum intake efficiency across the rev range
• Silicon-coated head gasket provides excellent sealing

Optional Accessories

• Optional DFI Calibration Kit allows custom tuning
• Optional FI Indicator Light allows the DFI system to communicate diagnostic information
• Optional engine parts include magneto rotors with different inertias and a 12-tooth output sprocket
• Optional chassis parts include handlebar holder for a 1-1/8 inch handlebar, 46 to 50-tooth aluminum and steel rear sprockets, solid petal brake rotors, different fork and shock springs and manual decompression lever and cable

Quick-turning Chassis

• The KX250F’s slim and lightweight aluminum perimeter frame helps provide excellent ergonomics and handling
• 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

Rider Interface

• Clutch cable boot features a large quick adjuster, making it easy for riders to adjust play in the clutch cable while on the fly
• Throttle grip has a 1-piece collar that provides additional stability during throttle operation
• Grips feature shorter barrels and are made from a softer material to enhance rider comfort
• Bodywork components offer the rider a slim interface, making it easy for racers to feel comfortable and go fast
• Formed using a double-injection molding process, the shrouds offer a slim design
• Right side panel passageways help cool the silencer
• Flat design of the seat and tank allow freedom of movement
• 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 polyurethane designed to be durable
• Seat has a slip-resistant top and side surface for good grip when seated and while standing
• 50 mm wide (front-to-rear) footpegs offer superb grip and feel at the pegs

Separate Function Fork

• 48 mm Separate Function Fork (SFF) delivers firm damping response and increased ride comfort
• SFF design separates springing and damping functions for less weight, better performance, less stiction and easier adjustability compared to traditional forks
• Revised piston tuning in the left fork leg enhances damping performance through the initial and mid-stroke
• Super-hard titanium coating on the outer surface of the inner fork tubes reduces stiction and improves suspension action while also helping prevent scratches and tube damage
• Friction-reducing Kashima Coat treatment on the inside of the outer fork tubes contributes to smoother suspension action
• Wrap-around fork tube guards provide excellent protection for the inner tubes

Stainless Steel Exhaust System

• Head pipe resonator chamber helps boost low-rpm torque
• High-volume muffler assembly features a large cross section to keep noise levels at 94 dB while retaining power production
• Durable stainless steel construction

Transmission and Shifting

• Transmission gears feature four dogs instead of three, for enhanced shift smoothness
• Shift-fork grooves are more-direct to enhance feel at the shift lever
• Clutch cable holder is integrated with the crankcase for accurate feel at the clutch lever
• Scavenge oil filter screen can be accessed without splitting the crankcases, facilitating easier maintenance

Uni-Trak® Rear Suspension

• Rear shock features dual compression adjustability, allowing high-speed and low-speed damping to be tuned separately
• Features Kashima Coat on the inside cylinder wall for reduced friction and smoother suspension action
• Revised rear shock settings provide a more comfortable “baseline” for a wide range of riders
• Swingarm features tapered hydroformed spars and forged chain adjusters
• Uni-Trak® rear suspension linkage system mounts the suspension arm below the swingarm, allowing more rear suspension stroke and precise tuning
• Linkage ratios for the Uni-Trak rear suspension match rear shock damping settings to achieve maximum rear wheel traction