Kawasaki Z900 RS 2021 vs. Kawasaki Z650 2021

Kawasaki Z900 RS 2021

Kawasaki Z900 RS 2021

Kawasaki Z650 2021

Kawasaki Z650 2021

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Overview - Kawasaki Z900 RS 2021 vs Kawasaki Z650 2021

The Kawasaki Z900 RS 2021 and the Kawasaki Z650 2021 are both naked bikes from Kawasaki, but they have some distinct differences in terms of specifications and strengths.

Starting with the Kawasaki Z900 RS 2021, it boasts a powerful engine with an inline configuration. It has a higher engine power of 111 HP and torque of 98.6 Nm, making it a more performance-oriented bike. The fuel system is injection-based, and it has four cylinders for smooth power delivery. The liquid cooling system ensures optimal engine temperature. With a displacement of 948 ccm, it offers ample power for thrilling rides.

In terms of suspension, the Z900 RS 2021 features an upside-down telescopic fork at the front and a swing arm suspension at the rear. The rear suspension also has preload and rebound adjustment for fine-tuning the ride experience. The steel tubular frame provides strength and stability to the bike.

For braking, the Z900 RS 2021 is equipped with double disk brakes at the front with a diameter of 300 mm and four pistons for enhanced stopping power. It also comes with advanced rider assistance systems such as ABS and traction control for added safety.

Kawasaki Z900 RS 2021

Kawasaki Z900 RS 2021

The dimensions and weights of the Z900 RS 2021 include 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 is 1470 mm, providing stability during high-speed maneuvers. The seat height is 835 mm, offering a comfortable riding position. With a kerb weight of 215 kg (with ABS) and a fuel tank capacity of 17 liters, it is a slightly heavier bike.

Moving on to the Kawasaki Z650 2021, it features an inline engine configuration like the Z900 RS 2021. However, it has a lower engine power of 68.2 HP and torque of 65.7 Nm, making it a more accessible option for riders. The fuel system is also injection-based, and it has two cylinders for a balanced performance. The liquid cooling system ensures efficient heat dissipation.

In terms of suspension, the Z650 2021 comes with a telescopic fork at the front and a swing arm suspension at the rear, similar to the Z900 RS 2021. However, the rear suspension only has preload adjustment. The steel tubular frame provides strength and stability to the bike.

For braking, the Z650 2021 is equipped with double disk brakes at the front with a diameter of 300 mm and double pistons for effective stopping power. It also comes with ABS as an advanced rider assistance system.

The dimensions and weights of the Z650 2021 include 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 is slightly shorter at 1410 mm compared to the Z900 RS 2021. The seat height is lower at 790 mm, making it more accessible for shorter riders. With a kerb weight of 187.1 kg (with ABS) and a fuel tank capacity of 15 liters, it is a lighter bike compared to the Z900 RS 2021.

Kawasaki Z650 2021

Kawasaki Z650 2021

In terms of strengths, the Z900 RS 2021 stands out with its authentic and beautiful retro look. It also offers a very comfortable seating position, making it suitable for long rides. Additionally, it is easy and comfortable to ride, making it a great option for both experienced and novice riders.

On the other hand, the Z650 2021 has its own set of strengths. It features an accessible two-cylinder engine, making it suitable for riders who prefer a more manageable power delivery. The compact dimensions and low seat height make it easy to handle, especially in urban environments. The stable chassis ensures a confident ride, and the TFT display with connectivity adds a modern touch to the bike. It also has a grown-up look, appealing to riders who prefer a more mature aesthetic.

However, the Z900 RS 2021 does have some weaknesses. It lacks a quickshifter and driving modes, although it does have adjustable traction control. On the other hand, the Z650 2021 may not be as comfortable for tall riders, and the adrenaline level in the saddle may be lower compared to its competitors.

In conclusion, the Kawasaki Z900 RS 2021 and the Kawasaki Z650 2021 offer different riding experiences and cater to different preferences. The Z900 RS 2021 is a more powerful and performance-oriented bike with a retro look, while the Z650 2021 is a more accessible option with compact dimensions and a modern aesthetic.

Technical Specifications Kawasaki Z900 RS 2021 compared to Kawasaki Z650 2021

Kawasaki Z900 RS 2021
Kawasaki Z650 2021

Engine and Drive Train

Engine typeEngine typeIn lineEngine typeIn line
BoreBore73.4 mmBore83 mm
StrokeStroke56 mmStroke60 mm
Engine powerEngine power111 HPEngine power68.2 HP
Rpm at Max. PowerRpm at Max. Power8,500 rpmRpm at Max. Power8,000 rpm
TorqueTorque98.6 NmTorque65.7 Nm
Rpm at TorqueRpm at Torque6,500 rpmRpm at Torque7,000 rpm
Compression RatioCompression Ratio10.8 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
TravelTravel140 mmTravel130 mm
AdjustmentAdjustmentPreload, ReboundAdjustmentPreload

Chassis

FrameFrameSteelFrameSteel
Frame typeFrame typeTubularFrame typeTubular
RakeRake65 degreeRake65.5 degree
TrailTrail98 mmTrail100 mm

Brakes Front

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

Brakes Rear

TypeTypeDiscTypeDisc
DiameterDiameter250 mmDiameter220 mm
PistonPistonSingle pistonPistonSingle piston

Assistance Systems

Advanced Rider Assistance SystemsAdvanced Rider Assistance SystemsABS, Traction controlAdvanced Rider Assistance SystemsABS

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
LengthLength2,100 mmLength2,055 mm
WheelbaseWheelbase1,470 mmWheelbase1,410 mm
Seat HeightSeat Height835 mmSeat Height790 mm
Kerb Weight (with ABS)Kerb Weight (with ABS)215 kgKerb Weight (with ABS)187.1 kg
Fuel Tank CapacityFuel Tank Capacity17 lFuel Tank Capacity15 l
License compliancyLicense compliancyALicense compliancyA

Pros and Cons in comparison

Pros and Cons in comparison

Kawasaki Z900 RS 2021

Kawasaki Z900 RS 2021

A timelessly beautiful motorbike, the Z 900 RS. Its heart, the powerful and silky-smooth four-cylinder, ensures absolute riding pleasure. Even for longer rides, it offers plenty of comfort thanks to its pleasant seating position, well-padded saddle and high, wide handlebars. For those who like retro motorbikes but appreciate modern handling, the Z1 Homage is a very good choice.

authentic, beautiful retro look

very comfortable seating position

easy and comfortable to ride

no quickshifter and no driving modes (but TC adjustable)

Kawasaki Z650 2021

Kawasaki Z650 2021

Even in 2021, the Kawasaki Z 650 stands for easy riding with great looks and good equipment. Both seat height and engine are very accessible and will give both experienced riders and newcomers a lot of pleasure. If you are looking for an honest naked bike without any big surprises, this is the bike for you. Due to its compact dimensions, however, you should try it out before buying and perhaps go for the raised seat.

accessible two-cylinder

compact dimensions

low seat height

stable chassis

TFT display with connectivity

grown-up look

Probably uncomfortable for tall riders

adrenaline level in the saddle lower than with the competition

Price Comparison Avarage Market Price Kawasaki Z900 RS vs Kawasaki Z650

There are a few key differences between a Kawasaki Z900 RS 2021 and a Kawasaki Z650 2021. In terms of price, the actual average price of a Kawasaki Z900 RS 2021 is about 64% higher. Compared to Kawasaki Z650 2021 there are less Kawasaki Z900 RS 2021 bikes available on the 1000PS.de Marketplace, specifically 14 compared to 25. It takes less time to sell a Kawasaki Z650 with 106 days compared to 125 days for the Kawasaki Z900 RS. Since model year 2018 1000PS.de editors have written 26 reviews for the Kawasaki Z900 RS and 31 reviews for the Kawasaki Z650 since model year 2017. The first review for the Kawasaki Z900 RS was published on 06/09/2017 and now has more than 63,700 views. This compares to more than 25,000 views for the first review on Kawasaki Z650 published on 08/11/2016.

Price Kawasaki Z900 RS

Model year
Current average market prices

Price Kawasaki Z650

Model year
Current average market prices

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