2013 Kawasaki Kx 250 on 2040-motos

Kawasaki KX description

For almost a decade, no other bike has spent more time on AMA Supercross and Motocross podiums than the Kawasaki KX250F. The race-proven technology of the quarter-liter motocross leader returns for 2013, with an all-new plug-and-play adjustable ECU, narrower new frame, upgraded Separate Function Fork (SFF) fork and slimmer ergonomics, so the KX250F is poised to continue its class dominance in 2013.At a glance... Upgraded Showa Separate Function Fork (SFF) provides more progressive damping force and features larger-diameter 48mm inner fork tubes for improved rigidity and less stiction Dual injector Digital Fuel Injection system More robust high-rpm engine output extends deep into the overrev Stronger engine components improve reliabilityHigh-Revving, High Performance Engine 249cc, liquid-cooled, four-stroke, four-valve, single-cylinder DUAL OVERHEAD CAM 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 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 rangeDigital Fuel Injection (DFI) System Revised intake tract provides a straighter shot into the combustion chamber for more direct airflow from the airbox into the combustion chamber Seal between air inlet port and throttle position sensor unit on the 43mm throttle body protects TPS sensor from fuel penetration Progressive throttle linkage opens more quickly after 3/8 open position Simple and efficient system: No battery, fuses or relays Sharp and precise engine response across entire rpm range Offers easy engine starting Helps prevent engine hesitation after landing from jumps and other high-impact situationsBridged Box-Bottom Piston Revised piston profile helps increase reliability 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 weightLightweight and Efficient Top End Stronger 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 sealingStainless Steel Exhaust System New 30mm shorter head pipe improves performance with a resonator chamber to help boost low-rpm torque New high-volume muffler assembly is 30mm shorter with a larger cross section keeps noise levels at 94 dB while retaining power production Durable stainless steel constructionEfficient 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 coolingTransmission and Shifting Strong, beefy crankcases feature additional material around the engine mounts to help increase long term durability 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 maintenanceQuick-turning Chassis The KX250F's slim and lightweight aluminum perimeter frame is 4mm narrower for improved 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 squatUpgraded SFF Fork Upgraded 48mm Separate Function Fork (SFF) features new 1mm larger inner fork tubes which allow the internal damping components to be larger, for firmer damping response and increased ride comfort SFF design separates springing and damping functions for less weight, better performance, less stiction and easier adjustability 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 Revised lower triple clamp open at the back for increased rigidity and improved fork actionUni-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 New swingarm uses a longer cast front section, 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 max rear wheel tractionRider Interface 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 New smaller side number plates also contribute to the slim package Right side panel has an added passageway to help cool the silencer Flatter design of the seat and tank offer greater 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 upgraded polyurethane, designed for greater durability Seat has a slip-resistant top and side surface for good grip when seated and while standing 50mm wide (front-to-rear) footpegs offer superb grip and feel at the pegs 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 one-piece collar that provides additional stability during throttle operation Longer hand grips allow the rider to hold the bars closer to the centerline and are made of lower density material for improved rider comfortFactory-style Components New pushrod type front brake master cylinder and new brake pad material provide stronger brake force and enhanced feel New 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 further 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 performanceAdditional