2018 Kawasaki KX450F The Kawasaki Difference THIS IS OUR PROOF The KX450F 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 worlds premier race teamanother reason why the KX450F is The Bike That Builds Champions. Features may include: CHAMPIONSHIP-PROVEN POWER The KX450F motorcycle is lightweight and powerful due to innovative race-proven components. Pick a category to start exploring. CHASSIS AND BODYWORK The slim, lightweight, aluminum perimeter frame and triple clamps contribute to agile handling while a flat seat profile and integrated bodywork facilitate easy rider movement and a championship fit. SHOWA SFF-AIR TAC FORK Lightweight design with tuned rigidity to match chassis dynamics and optimize front end feel Features low-friction fork seals and optimized valve settings for smooth action and progressive damping ADVANCED FUEL MAPPING TECHNOLOGY The KX450F motorcycle features several advanced ignition and fuel-mapping systems for precise adjustability.