Compare Motorcycles
Yamaha Yz 450 F
Kawasaki Kx 450
Type
Motocross
Motocross
Horsepower
~62 hp @ 9,500 rpm (note: figure based on modern 2020+ models; earlier models ranged 55-60 hp)
~55 hp @ 9,000 rpm (estimated; Kawasaki does not officially publish power figures — note: dyno results typically range 53–58 hp)
Torque
~52 Nm @ 7,500 rpm (note: estimated based on published dyno data for recent models)
~52 Nm @ 7,500 rpm (estimated; official figures not published — note: best estimate based on dyno data)
Top Speed
~145 km/h (note: estimated under optimal conditions on a straight; varies by rider and terrain)
~145 km/h (estimated; gearing and terrain dependent — note: best estimate, not manufacturer-specified)
Weight
110 kg (wet/curb weight, based on 2020+ models)
110 kg (curb weight, 2023 model)
Fuel
Estimate: ~6-8 L/100km under typical motocross/off-road riding conditions (note: highly variable depending on riding intensity; not designed for road use)
Estimated 6–9 L/100km (note: highly variable depending on riding intensity; off-road/motocross use is not standardized for fuel economy testing)
Fairing
No
No