2015 Kawasaki KX 250F, The record books don t lie. Whether it s Team Green amateur racing, professional AMA Supercross or Motocross, the most successful 250cc motocross bike in the four-stroke category just got even better thanks to a series of upgrades designed to maximize the performance of this already impressive motorcycle. At a Glance Revised damping settings in the Showa Separate Function Fork (SFF) provides progressive damping force and features 48mm inner fork tubes for rigidity Revised Uni-Trak® rear shock settings New 270mm oversized front rotor, petal-style Braking-brand rotors front/rear New finer-atomizing Downstream Fuel Injector and revised ECU settings Launch Control increases ability to get good starts, by maximizing available traction New Bridged-Box-Bottom piston New Magneto Rotor with increased inertia Adjustable footpegs and handlebar clamps Lighter subframe New Factory styling High-revving, High-performance Engine 249cc, liquid-cooled, four-stroke, four-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 new Bridged Box piston with short skirts and reinforced external ribs for increased strength. 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 Factory-Style Launch Control System The KX250F Launch Control was a first for the 250 class and increased the rider s 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 Digital Fuel Injection (DFI®) System New finer-atomizing Downstream Fuel Injector and revised ECU settings The dual injectors are fine-atomizing injectors with four holes. The upstream injector has a droplet size of 120µm, while the new downstream injector is 75µm. The finer size and wider spray pattern contributes to a stronger low- to mid-range power, improved response and quicker acceleration. Intake tract
2017 Kawasaki KX 450F, 2017 Kawasaki KX 450F The Kawasaki Difference THIS IS OUR PROOF The 2017 KX 450F motorcycle is the most powerful, lightweight, and agile KX450F ever. Developed from the highest levels of racing, this championship bike has advanced technology sourced straight from the world s premier race team another reason why the KX450F is The Bike That Builds Champions. CHAMPIONSHIP-PROOVEN POWER The 2017 KX 450F motorcycle is lightweight and powerful due to innovative race-proven components. Pick a category to start exploring. Features may include: ENGINE Race-team-inspired Bridged-Box Bottom piston is lightweigth and designed to mach intake valves to optimaze combustion efficiency for maximum performance at all rpms EXHAUST Echaust header fearures an integrated resonator for crisp thottle response at low rpm and reduced exhust sound level INTAKES Rear seat intakes ensure clean airflow and costribute to improved throttle responseHigh flow airbox with rear intake cannels for improved engine power CHASSIS AND BODYWORK The slim, lightweight, aluminum perimeter frame and revised triple clamps contribute to agile handling while a flat seat profile and integrated bodywork facilitate easy rider movement and a championship fit. SLIM, LIGHTWEIGHT CHASSIS Lightweight aluminum perimeter frame for sharp handlingRedesigned triple clamp offers improved stability on corner entry to allow quicker turn-in.Slim frame spars and narrow shrouds allow easier rider movementOptimized swingarm rigidity for maximum rear wheel traction Lightweight bodywork features Kawasaki s first in-mold graphics for a durable, aggressive lookLightweight bodywork with smooth, seamless surface at the rider's contact points.The KX graphics are now molded into the shrouds for greater longevity and an ultra-smooth outer surface. ADJUSTABLE ERGONOMICS Adjustable four-piston handlebar moves towards or away from your bodyTwo-position adjustable footpegs help reduce knee angle when seated SHOWA SFF-AIR TAC FORK Lightweight design with tuned rigidity to match chassis dynamics and optimize front end feelFeatures low-friction fork seals and optimized valve settings for smooth action and progressive dampingSTEP 1: Set inner chamber air pressure - The pressure in this chamber affects the overall fee across the entire strokeSTEP 2: Set the pressure of the unter air chamber- The ounter chamber affects the last thirt of the travel so you can adjust the level of bottom
It's no secret that Monster Energy Kawasaki has been dominating the AMA Supercross and AMA Motocross series, with Ryan Villopoto piloting his Monster Energy® Kawasaki KX450F race bike to four consecutive AMA Supercross Championships in 2011 through 2014. Villopoto's skills are undeniable, but the race-ready Kawasaki KX450F allows the legendary racer to brake later, carve deeper and accelerate harder thanks to a technology package and powerful yet tractable motor unrivaled by any production motocross bike.
The record books don't lie. Whether it's Team Green amateur racing, professional AMA Supercross or Motocross, the most successful 250cc motocross bike in the four-stroke category just got even better thanks to a series of upgrades designed to maximize the performance of this already impressive motorcycle.
