Positioned in Kawasaki's cross - motocross motorcycle lineup, the 2017 Kawasaki KX 450F features a 449 cc (27.4 cu in) liquid-cooled single cylinder, four-stroke configuration. Internal engine geometry specifies a bore and stroke of 96.0 x 62.1 mm (3.8 x 2.4 inches) with a 12.8:1 compression ratio.
On the scales, the KX 450F measures 108.8 kg (240 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 950 mm (37.4 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,495 mm (58.9 in) wheelbase engineered for balanced agility and highway composure. The 6.21-liter (1.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kawasaki archive, this model family spans 10 indexed model years from 2007 to 2018, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
950 mm (37.4 in)
Engine
Displacement449.0 ccm (27.40 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression12.8:1
Bore x Stroke96.0 x 62.1 mm (3.8 x 2.4 inches)
Valves/Cylinder4
Fuel SystemInjection. 43mm Keihin throttle body
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionDigital DC-CDI
LubricationForced lubrication, semi and #8209;dry sump
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet multi-disc
Chassis
Frame TypePerimeter, aluminium
Rake26.9°
Front Suspension49 mm inverted Separate Function front Fork Air - Triple Air Chamber (SFF-Air TAC). Compression damping: 22-way. Rebound damping: 20-way
Front Travel305 mm (12.0 inches)
Rear SuspensionUni-Trak. Compression damping: 19-way (low-speed), 4-turns or more (high-speed). Rebound damping: 22-way. Spring preload: Fully adjustable
Rear Travel305 mm (12.0 inches)
Wheelbase1495 mm (58.9 inches)
Ground Clearance335 mm (13.2 inches)
Wheels & Brakes
Front Tyre80/100-21
Rear Tyre120/80-19
Front BrakesSingle disc. Petal disc with 2-piston caliper
Front Brake Ø270 mm (10.6 inches)
Rear BrakesSingle disc. Petal disc with single-piston caliper
Rear Brake Ø240 mm (9.4 inches)
Dimensions & Weight
Weight incl.108.8 kg (239.9 pounds)
Seat Height950 mm (37.4 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
