Built around Kawasaki's enduro - offroad motorcycle platform, the 2019 Kawasaki KLX450R relies on a 449 cc (27.4 cu in) liquid-cooled single cylinder, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 96.0 x 62.1 mm (3.8 x 2.4 inches) with a 12.0:1 compression ratio.
On the scales, the KLX450R measures 126 kg (278 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 935 mm (36.8 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,480 mm (58.3 in) wheelbase engineered for balanced agility and highway composure. The 8-liter (2.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kawasaki archive, this model family spans 9 indexed model years from 2012 to 2023, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
935 mm (36.8 in)
Engine
Displacement449.0 ccm (27.40 cubic inches)
Engine TypeSingle cylinder, four-stroke
Compression12.0:1
Bore x Stroke96.0 x 62.1 mm (3.8 x 2.4 inches)
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionDC-CDI
CoolingLiquid
Transmission
Final DriveChain (final drive)
ClutchWet multi-disc, manual
Chassis
Frame TypePerimeter, aluminium
Front SuspensionUSD Air Oil Separate Systems cartridge-type telescopic fork with 22-way compression and 18-way rebound damping adjustment
Front Travel48 mm (1.9 inches)
Rear SuspensionNew Uni-Trak with gas-charged shock absorber which features adjustable spring preload, 22-way rebound and 22-way (low speed) compression damping and 2 turns or more of high speed compression adjustment.
Wheelbase1480 mm (58.3 inches)
Ground Clearance315 mm (12.4 inches)
Wheels & Brakes
Front Tyre80/100-21
Rear Tyre120/90-18
Front BrakesDouble disc
Front Brake Ø250 mm (9.8 inches)
Rear BrakesSingle disc
Rear Brake Ø240 mm (9.4 inches)
Dimensions & Weight
Weight incl.126.0 kg (277.8 pounds)
Seat Height935 mm (36.8 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.
