2017 Kawasaki KX450F



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.


  • Race-team-inspired bridged-box bottom piston is lightweight and designed to match intake valves to optimize combustion efficiency for maximum performance at all rpms
  • The powerful and lightweight engine delivers instant throttle response, broad power delivery and incredible peak power
  • Exhaust header features an integrated resonator for crisp throttle response at low rpm and reduced exhaust sound level
  • High flow airbox with rear air intake channels for improved engine power
  • Rear seat intakes ensure clean airflow and contribute to improved throttle response

Frame and Styling

  • Lightweight aluminum perimeter frame for sharp handling. Redesigned triple clamp offers improved stability on corner entry to allow quicker turn-in. Slim frame spars and narrow shrouds allow easier rider movement. Optimized swingarm rigidity for maximum rear wheel traction.
  • Lightweight bodywork features Kawasaki’s first in-mold graphics for a durable, aggressive look. Lightweight 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 four-piston handlebar moves towards or away from your body. Two-position adjustable footpegs help reduce knee angle when seated.

Fuel Mapping

  • Handheld FI calibration controller eliminates need for laptop and 12V battery at the track. Allows the user to adjust fuel and ignition settings for ultimate performance. Can store up to 7 preset maps for different tracks.
  • Factory-tuned power settings with plug-and-play versatility. Select a coupler to access one of the 3 different preset engine maps. Standard, hard and soft terrain setting options.
  • Race-team-derived feature for grabbing the holeshot. Engages with a press of a button. Functions in first and second gears. Precise ignition timing helps ensure quicker acceleration with less slippage.


  • Features low-friction fork seals and optimized valve settings for smooth action and progressive damping
  • Lightweight design with tuned rigidity to match chassis dynamics and optimize front end feel.

General Information

Manufacturer Kawasaki
Model Year 2017
Model KX450F
Model Code KX450HHF
Stock Number N/A
Color Lime Green



Front - Single semi-floating 270 mm petal disc, 2-piston caliper

Rear - Single 240 mm petal disc, 1-piston caliper


Front - 80/100-21

Rear - 120/80-19


Length 86.4 in.
Height 50.4 in.
Width 32.3 in.
Weight Curb - 239.8 lbs.
Ground Clearance 13.2 in.
Wheelbase 58.9 in.
Seat Height 37.4 in.


Transmission 5-speed, return shift
Final Drive Chain


Engine 4-stroke, 1-cylinder, DOHC
Displacement 449cc
Bore x Stroke 96 x 62.1 mm
Compression Ratio 12.8:1
Fuel System DFI® with 43 mm Keihin throttle body
Fuel Capacity 1.6 gal.
Ignition Digital DC-CDI
Cooling Water


Frame Aluminum perimeter

Front - Inverted Showa SFF-Air TAC fork with Triple Air Chamber, DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment; Travel - 12 in.

Rear - Uni-Trak® linkage system and Showa shock, 19-position low-speed and 4 turns high-speed compression dampening, 22-position rebound dampening and fully adjustable spring preload; Travel - 12 in.

Rake 28.2°
Trail 5 in.