Kawasaki Z900 2021 vs. Kawasaki Z650 2023

Kawasaki Z900 2021

Kawasaki Z900 2021

Kawasaki Z650 2023

Kawasaki Z650 2023

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Overview - Kawasaki Z900 2021 vs Kawasaki Z650 2023

The Kawasaki Z900 model year 2021 is a naked bike that boasts a powerful four-cylinder engine. With an engine power of 125.4 HP and a torque of 98.6 Nm, it offers impressive performance on the road. The fuel system is injection-based, and it has four cylinders and liquid cooling. The displacement of the engine is 948 ccm, providing ample power for any riding situation.

In terms of suspension, the Z900 2021 features an upside-down telescopic fork in the front and a swing arm with a monoshock in the rear. The rear suspension offers adjustment options for preload and rebound. The frame of the bike is made of steel, and it has a double cradle frame type, which ensures stability and durability.

When it comes to braking, the Z900 2021 is equipped with double disk brakes in the front with a diameter of 300 mm and four pistons. The braking technology used is petal, which enhances the bike's stopping power. The bike also comes with advanced rider assistance systems such as ABS, riding modes, ride by wire, and traction control, ensuring a safe and controlled riding experience.

In terms of dimensions and weights, the Z900 2021 has a front tire width of 120 mm and a diameter of 17 inches. The rear tire has a width of 180 mm and the same diameter of 17 inches. The wheelbase measures 1450 mm, and the seat height is 795 mm. With ABS, the bike weighs 210 kg.

Kawasaki Z900 2021

Kawasaki Z900 2021

The Z900 2021 is equipped with LED daytime running lights, LED headlights, and a TFT display, providing excellent visibility and a modern look.

On the other hand, the Kawasaki Z650 model year 2023 is also a naked bike but with a slightly less powerful engine. It features an in-line engine with a power output of 68 HP and a torque of 65.7 Nm. The fuel system is injection-based, and it has two cylinders and liquid cooling. The displacement of the engine is 649 ccm, offering decent performance for everyday riding.

The suspension of the Z650 2023 consists of a telescopic fork in the front and a swing arm with a monoshock in the rear. The rear suspension offers preload adjustment. The frame of the bike is made of steel, and it has a tubular frame type, ensuring stability and strength.

In terms of braking, the Z650 2023 is equipped with double disk brakes in the front with a diameter of 300 mm and double pistons. The braking technology used is petal, providing reliable stopping power. The bike also comes with advanced rider assistance systems such as ABS and traction control, ensuring safety on the road.

Kawasaki Z650 2023

Kawasaki Z650 2023

In terms of dimensions and weights, the Z650 2023 has a front tire width of 120 mm and a diameter of 17 inches. The rear tire has a width of 160 mm and the same diameter of 17 inches. The wheelbase measures 1410 mm, and the seat height is 790 mm. With ABS, the bike weighs 187.1 kg.

Similar to the Z900 2021, the Z650 2023 is equipped with LED daytime running lights, LED headlights, and a TFT display, providing excellent visibility and a modern look.

In terms of strengths, the Z900 2021 offers a powerful four-cylinder engine, intuitive handling, good equipment, aggressive looks, and value for money. On the other hand, the Z650 2023 excels in very accessible handling, being compact and easy to maneuver, giving small riders a lot of confidence, and having adjustable levers.

However, the Z900 2021 has some weaknesses, including the lack of a quickshifter option and being electronically behind competitors with a 6-axis IMU. On the other hand, the Z650 2023 has weaknesses such as not enough space for tall riders, looking smaller than a 650cc bike overall, having a tame engine, a defensive seating position, and narrow and cranked handlebars for a naked bike.

Technical Specifications Kawasaki Z900 2021 compared to Kawasaki Z650 2023

Kawasaki Z900 2021
Kawasaki Z650 2023

Engine and Drive Train

Engine typeEngine typeIn lineEngine typeIn line
BoreBore73.4 mmBore83 mm
StrokeStroke56 mmStroke60 mm
Engine powerEngine power125.4 HPEngine power68 HP
Rpm at Max. PowerRpm at Max. Power9,500 rpmRpm at Max. Power8,000 rpm
TorqueTorque98.6 NmTorque65.7 Nm
Rpm at TorqueRpm at Torque7,700 rpmRpm at Torque7,000 rpm
Compression RatioCompression Ratio11.8 Compression Ratio10.8
Fuel systemFuel systemInjectionFuel systemInjection
Throttle BoreThrottle Bore36 mmThrottle Bore36 mm
Clutch TypeClutch TypeMultiplate in oil-bathClutch TypeMultiplate in oil-bath
IgnitionIgnitionDigitalIgnitionDigital
TransmissionTransmissionChainTransmissionChain
Transmission TypeTransmission TypeGearshiftTransmission TypeGearshift
Number of gearsNumber of gears6Number of gears6
CylindersCylinders4Cylinders2
StrokesStrokes4-StrokeStrokes4-Stroke
Valves per cylinderValves per cylinder4Valves per cylinder4
ValvesValvesDOHCValvesDOHC
CoolingCoolingliquidCoolingliquid
DisplacementDisplacement948 ccmDisplacement649 ccm

Suspension Front

Front suspensionFront suspensionUpside-Down telescopic forkFront suspensionTelescopic fork
DiameterDiameter41 mmDiameter41 mm
TravelTravel120 mmTravel125 mm

Suspension Rear

SuspensionSuspensionSwing armSuspensionSwing arm
Shock absorberShock absorberMonoshockShock absorberMonoshock
Shock mountShock mountDeflectionShock mountDeflection
TravelTravel140 mmTravel130 mm
AdjustmentAdjustmentPreload, ReboundAdjustmentPreload

Chassis

FrameFrameSteelFrameSteel
Frame typeFrame typeDouble cradleFrame typeTubular
RakeRake65 degreeRake65.5 degree
TrailTrail105 mmTrail100 mm

Brakes Front

TypeTypeDouble diskTypeDouble disk
DiameterDiameter300 mmDiameter300 mm
PistonPistonFour pistonsPistonDouble piston
Shock mountShock mountFixed caliperShock mountSemi-Schwimmsattel
TechnologyTechnologyPetalTechnologyPetal

Brakes Rear

TypeTypeDiscTypeDisc
DiameterDiameter250 mmDiameter220 mm
PistonPistonSingle pistonPistonSingle piston

Assistance Systems

Advanced Rider Assistance SystemsAdvanced Rider Assistance SystemsABS, Riding modes, Ride by Wire, Traction controlAdvanced Rider Assistance SystemsABS, Traction control

Dimensions and Weights

Front tyre widthFront tyre width120 mmFront tyre width120 mm
Front tyre heightFront tyre height70 %Front tyre height70 %
Front tyre diameterFront tyre diameter17 inchFront tyre diameter17 inch
Rear tyre widthRear tyre width180 mmRear tyre width160 mm
Rear tyre heightRear tyre height55 %Rear tyre height60 %
Rear tyre diameterRear tyre diameter17 inchRear tyre diameter17 inch
LengthLength2,070 mmLength2,055 mm
WheelbaseWheelbase1,450 mmWheelbase1,410 mm
Seat HeightSeat Height795 mmSeat Height790 mm
Kerb Weight (with ABS)Kerb Weight (with ABS)210 kgKerb Weight (with ABS)187.1 kg
License compliancyLicense compliancyALicense compliancyA

Equipment

EquipmentEquipmentLED daytime running lights, LED-Headlights, TFT displayEquipmentLED daytime running lights, LED-Headlights, TFT display

Pros and Cons in comparison

Pros and Cons in comparison

Kawasaki Z900 2021

Kawasaki Z900 2021

In terms of price-performance, the Kawasaki Z900 is hard to beat at the moment. With the perfectly tuned engine, the high-quality chassis components and the electronics added for 2020, this naked bike offers everything that sporty riders will be looking for. There is really nothing to complain about, except for the lack of a quickshifter option.

powerful four-cylinder

intuitive handling

good equipment

aggressive looks

value for money

No quickshifter option

competitors with 6-axis IMU electronically ahead.

Kawasaki Z650 2023

Kawasaki Z650 2023

The Kawasaki Z 650 is probably the most docile motorbike in the naked bike segment. And that is to be understood in an absolutely positive way - as long as you are not particularly tall and heavy. It is slim, light, agile and accessible. All the controls, but also the engine, do not overwhelm. If you are looking for spectacular performance, you should go for the Z 900, but if you are looking for a nimble and easy-to-ride motorbike, you will be satisfied.

Very accessible handling

Very compact and easy to manoeuvre

Motorcycle appears light and compact

Gives small riders a lot of confidence

Adjustable levers

Not enough space on the bike for tall riders

bike looks a class smaller than 650cc overall

engine looks a bit tame

very defensive seating position

handlebars too narrow and cranked too much for a naked bike.

Price Comparison Avarage Market Price Kawasaki Z900 vs Kawasaki Z650

There are a few key differences between a Kawasaki Z900 2021 and a Kawasaki Z650 2023. In terms of price, the actual average price of a Kawasaki Z900 2021 is about 26% higher. Compared to Kawasaki Z650 2023 there are less Kawasaki Z900 2021 bikes available on the 1000PS.de Marketplace, specifically 33 compared to 243. It takes less time to sell a Kawasaki Z900 with 107 days compared to 146 days for a Kawasaki Z650. Since model year 2017 1000PS.de editors have written 46 reviews for the Kawasaki Z900 and 31 reviews for the Kawasaki Z650 since model year 2017. The first review for the Kawasaki Z900 was published on 11/11/2016 and now has more than 93,200 views. This compares to more than 25,000 views for the first review on Kawasaki Z650 published on 11/8/2016.

Price Kawasaki Z900

Model year
Current average market prices

Price Kawasaki Z650

Model year
Current average market prices

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