The 2017 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 world’s premier race team—another reason why the KX450F is The Bike That Builds Champions.
- Championship-Proven Power: The 2017 KX450F motorcycle is lightweight and powerful due to innovative race-proven components.
- 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.
- 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.
- Engine: 4-stroke, 1-cylinder, DOHC, water-cooled
- Displacement: 449cc
- Bore x Stroke: 96.0 x 62.1mm
- Compression ratio: 12.8:1
- Fuel System: DFI® with 43mm Keihin throttle body
- Ignition: Digital DC-CDI
- Transmission: 5-speed, return shift
- Final Drive: Chain
- Front Suspension / Wheel Travel: Inverted Showa SFF-Air TAC fork with Triple Air Chamber, DLC coated sliders, 22-position compression and 20-position rebound damping adjustment / 12.0 in.
- Rear Suspension / Wheel Travel: Uni-Trak® linkage system and Showa shock, 19-position low-speed and 4-turns high-speed compression damping, 22-position rebound damping and fully adjustable spring preload / 12.0 in.
- Front Tire Size: 80/100-21
- Rear Tire Size: 120/80-19
- Front Brakes: Single semi-floating 270mm Braking petal disc with dual-piston caliper
- Rear Brakes: Single 240mm Braking petal disc with single-piston caliper
- Frame Type: Aluminum perimeter
- Rake/Trail: 28.2 deg. / 5.0 in.
- Overall Length: 86.4 in.
- Overall Width: 32.3 in.
- Overall Height: 50.4 in.
- Ground Clearance: 13.2 in.
- Seat Height: 37.4 in.
- Curb Weight: 239.8 lb.
- Fuel Capacity: 1.66 gal.
- Wheelbase: 58.9 in.