2012 Kawasaki KX250

Description

Engine- Powerful and lightweight 249cc two-stroke liquid-cooled engine- Piston profile helps to reduce mechanical noise- Reed valve stopper improves low-rpm response and scavenging efficiency by facilitating airflow through the third scavenging port- High-flow water-pump impeller boosts coolant circulation for more consistent high-rpm and over-rev performance- Primary gear is secured using a key and lock-nut to help reduce mechanical noise- High-capacity silencer ensures the KX250 meets strict noise emission standards- Long-fiber silencer packing is durable and requires less maintenanceChassis- Renthal aluminum handlebar is strong and lightweight- Front and rear petal disc brakes help to reduce unsprung weight - Petal-shaped discs help to clean the brake pads for more efficient braking performance - Rear shock features dual compression adjustability so riders have tuning options for both low-speed and high-speed compression damping - Kayaba AOS (Air-Oil-Separate) fork features a one-piece plastic sleeve inside the fork tubes to improve suspension action at full compression

No other bike in its class has spent more time on the AMA Supercross podium than the Kawasaki KX?„?250F. The race-proven technology of the quarter-liter motocross leader returns for 2012. but with added enhancements that give the KX250F even more useable power. increased durability. and the best-handling chassis yet.

At A Glance. New dual injector Digital Fuel Injection systemMore robust high-rpm engine output extends deep into the overrevRevised transmission offers improved shifting action and durabilityThicker. stronger engine components improve reliabilityRevised Showa Separate Function Fork (SFF) offers more supple initial hit. and improved action during corner entryIncreased spring rates on front and rear suspension enhance traction and offer a more solid feelHigh-Revving. High Performance Engine249cc. liquid-cooled. four-stroke. four-valve. single-cylinder DOHC engine delivers hard-hitting power across the rpm rangeImproved decompressor spring action for easier startingNew nickel plating on cylinder walls has a higher adhesion factor for increased durabilityNew connecting rod has a thicker stem for improved reliabilityNew more rigid crankshaft is re-balanced for better performance and higher durabilityThicker 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 rangeRevised ACG stator and rotor inertia complements the changes made to the crankshaftDigital Fuel Injection (DFI) SystemUpgraded system adds a new ?ˆ?upstream?ˆ? injector located closer to the airboxAll-new second injector features different body size. but same capacity as primary injectorAdded seal between air inlet port and throttle position sensor unit on the 43mm throttle body protects TPS sensor from fuel penetrationProgressive throttle linkage opens more quickly after 3/8 open positionSimple and efficient system: No battery. fuses or relaysSharp and precise engine response across entire rpm rangeOffers easy engine startingHelps prevent engine hesitation after landing from jumps and other high-impact situationsOptional accessory calibration Kit features new 6-pin connector type allows easy tunabilityOptional accessory FI Indicator Light allows the DFI system to communicate diagnostic informationBridged-Box Bottom PistonLight and strong piston shares same design as the factory racers. with a new tin plating to optimize its interface with the new nickel plating on the cylinder wallChanged shape of streak finish improves lubrication and wear resistanceShort piston pin reduces reciprocating weightLightweight and Efficient Top EndLightweight. highly rigid. titanium 31mm intake and 25mm exhaust valves reduce reciprocating weight and offer high-rpm reliabilityUltra-light valves have extremely thin valve stems on par with those found in supersport machines; intake valves feature thick heads for increased strengthIntake ports designed for peak performance at all rpm. especially in the high-rpm rangeSpecial casting method leaves the intake port surfaces extremely smooth for optimum intake efficiency across the rev rangeSilicon-coated head gasket provides excellent sealingStainless Steel Exhaust SystemStainless steel construction offers extra durabilityHigh-volume muffler assembly keeps noise levels at 94 dB while retaining power productionJoint between pipe and muffler offers excellent sealing. while a rubber damper collar on the rear silencer mount equals serious durabilityEfficient Cooling SystemThick and wide radiators are strong and offer excellent resistance to mud buildup while providing superb cooling performanceCylinder head water jacket routes coolant to the front of the cylinder head for even coolingTransmission and ShiftingShorter shift fork stroke and more smooth solid shift forks (not hollow) offer improved shifting actionStrong. beefy crankcases feature additional material around the engine mounts to help increase long-term durabilityClutch cable holder is integrated with the crankcase for accurate feel at the clutch leverScavenge oil filter screen can be accessed without splitting the crankcases. facilitating easier maintenanceQuick-Turning ChassisUtilizes a low-rigidity steering stem for lighter handlingThe KX250F's slim and lightweight aluminum perimeter frame is composed of forged. extruded and cast partsCenter of gravity and key dimensions such as swingarm pivot. output sprocket and rear axle locations designed to increase forward drive with minimal rear-end squatUpper engine mounts on head cover sides increase overall rigidityRace-Oriented SuspensionRevised race-oriented suspension features heavier spring rates and revised damping settings both front and rearSeparate Function Fork (SFF) separates springing and damping functions for less weight. better performance. less stiction and easier adjustabilityFork features the only external spring preload adjustability in its classSuper-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 damageFriction-reducing Kashima Coat treatment on the inside of the outer fork tubes contributes to smoother suspension actionWrap-around fork tube guards provide greater protection for the inner tubesAltered piston rod specs improve shock setting flexibility and offer better rear wheel tractionFeatures Kashima Coat on the inside of the shock reservoir for reduced friction and smoother suspension actionRear shock features dual compression adjustability. allowing high-speed and low-speed damping to be tuned separatelySuperior Rear-Wheel TractionSwingarm features optimum internal bracing and flex characteristics for superb cornering performanceAlloy swingarm uses a cast front section. tapered hydroformed spars and forged chain adjustersUni-Trak?® rear suspension linkage system mounts the suspension arm below the swingarm. allowing more rear suspension stroke and precise tuningLinkage system receives upgraded tie-rod which has less rigidity for smoother suspension action and improved tractionLinkage ratios for the Uni-Trak rear suspension match rear shock damping settings to achieve maximum rear wheel tractionRider InterfaceBodywork components offer the rider a slim interface. making it easy for racers to feel comfortable and go fastFormed using a double-injection molding process. the two-tone shrouds offer a slim designSide number plates also two-toned and contribute to the slim packageRight side panel has an added passageway to help cool the silencerFrame is wider at the ankles to offer better grip and narrows near the bend below the seat to allow a slim riding positionSlim seat features upgraded polyurethane. designed for greater durabilitySeat has a slip-resistant top and side surface for good grip when seated and while standing50mm wide (front-to-rear) footpegs offer superb grip and feel at the pegsClutch cable boot features a large quick adjuster. making it easy for riders to adjust play in the clutch cable while on the flyThrottle grip has a one-piece collar that provides additional stability during throttle operationLightweight short-length grips feature a pattern designed to provide excellent gripFactory-Style ComponentsBlack alumite-coated rims. just like the factory racersTitanium coated inner fork tubes to minimize stictionLightweight rims offer maximum strength and weight savingsThick and rigid front fenderRear brake pad material offers powerful braking performanceFront and rear petal brake discs help reduce unsprung weight. and the wave shape helps clean the brake pads for more efficient stopping performanceRear caliper guard protects caliper from damageRibless rear hub and butted spokes further reduce unsprung weightRenthal aluminum handlebar is standard equipmentBlue ignition cover plugs and oil filler cap match the blue accents on the factory race bikesFactory-style graphics complement the KX250F's highly tuned performanceAdditional FeaturesNew countershaft sprocket cover improves lookNew polyurethane resin drive chain roller reduces weightRedesigned air boot allows room for second fuel injectorLarge resin skid plate offers great protection with minimum weightOptional AccessoriesOptional DFI Calibration Kit allows custom tuningOptional FI Indicator Light allows the DFI system to communicate diagnostic informationOptional engine parts include magneto rotors with different inertias and a 12-tooth output sprocketOptional chassis parts include handlebar holder for a 1 1/8-inch handlebar46 to 50-tooth aluminum and steel rear sprockets. solid petal brake rotors. different fork and shock springs and manual decompression lever and cableSpecificationsEngine: Four-stroke single with DOHC and four valvesDisplacement: 249ccBore x stroke: 77. 0 x 53. 6mmCooling: LiquidFuel injection: DFI?® with 43mm Keihin throttle body and dual injectorsCompression ratio: 13. 5:1Ignition: Digital CDITransmission: Five-speed with wet multi-disc manual clutchFinal drive: ChainFrame: Aluminum perimeterRake / trail: 28. 2 degrees / 4. 7 in. Front suspension / wheel travel: 47mm inverted Showa SFF telescopic fork with 60-way spring preload adjustability. 22 position compression and 20 position rebound damping adjustability/ 12. 4 in. Rear suspension / wheel travel: Uni-Trak?® linkage system and Showa shock with 13 position low-speed and stepless (2-turn)high-speed compression damping. 17 position rebound damping and fully adjustable spring preload / 12. 2 in. Front tire: 80/100-21Rear tire: 100/90-19Front brake: Single semi-floating 250mm petal disc with dual piston caliperRear brake: Single 240mm petal disc with single-piston caliperOverall length: 85. 4 in. Overall width: 32. 3 in. Overall height: 50. 0 in. Wheelbase: 58. 1 in. Ground clearance: 13. 0 in. Seat height: 37. 2 in. Curb weight: 233. 8 lbs. Fuel capacity: 1. 9 gal. Color: Lime Green

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