Kawasaki Z900 2017 vs. Harley-Davidson Sportster S RH1250S 2021

Kawasaki Z900 2017

Kawasaki Z900 2017

Harley-Davidson Sportster S RH1250S 2021

Harley-Davidson Sportster S RH1250S 2021

Loading...

Overview - Kawasaki Z900 2017 vs Harley-Davidson Sportster S RH1250S 2021

The Kawasaki Z900 2017 and the Harley-Davidson Sportster S RH1250S 2021 are both naked bikes that offer powerful performance and stylish designs. However, there are some notable differences between the two models.

In terms of engine specifications, the Kawasaki Z900 2017 features an in-line four-cylinder engine with a displacement of 948cc. It produces 125.4 horsepower and 98.6 Nm of torque. On the other hand, the Harley-Davidson Sportster S RH1250S 2021 is equipped with a V-twin engine with a displacement of 1252cc. It delivers slightly lower power at 122 horsepower but offers higher torque at 125 Nm. Both bikes have liquid cooling systems and fuel injection technology.

When it comes to suspension, both bikes feature upside-down telescopic forks at the front and swing arm suspension at the rear. The Kawasaki Z900 2017 offers preload and rebound adjustment for both the front and rear suspension, while the Harley-Davidson Sportster S RH1250S 2021 provides compression, preload, and rebound adjustment for both the front and rear suspension.

Kawasaki Z900 2017

Kawasaki Z900 2017

In terms of braking systems, the Kawasaki Z900 2017 is equipped with double disc brakes at the front with a diameter of 300mm and four-piston calipers. The Harley-Davidson Sportster S RH1250S 2021, on the other hand, features a single disc brake at the front with a larger diameter of 320mm and four-piston radial monoblock calipers. Both bikes come with ABS as part of their advanced rider assistance systems.

In terms of dimensions and weights, the Kawasaki Z900 2017 has a front tire width of 120mm and a rear tire width of 180mm, both with a diameter of 17 inches. It has a wheelbase of 1450mm and a seat height of 795mm. The bike weighs 210kg with ABS. On the other hand, the Harley-Davidson Sportster S RH1250S 2021 has a wider front tire with a width of 160mm and a rear tire width of 180mm, with a slightly smaller diameter of 16 inches. It has a longer wheelbase of 1520mm and a lower seat height of 755mm. The bike weighs slightly more at 228kg with ABS.

Harley-Davidson Sportster S RH1250S 2021

Harley-Davidson Sportster S RH1250S 2021

In terms of strengths, the Kawasaki Z900 2017 is praised for its ingenious naked bike chassis, superb looks, and a responsive engine with well-balanced torque. It is also considered to offer an optimal combination of performance, price, and practicality. On the other hand, the Harley-Davidson Sportster S RH1250S 2021 is commended for its powerful and refined engine, as well as its advanced electronics package, which includes cornering ABS, lean angle-dependent traction control, riding modes, cruise control, and ride-by-wire technology.

However, both bikes have their weaknesses as well. The Kawasaki Z900 2017 is criticized for having a narrow knee angle, which may be uncomfortable for taller riders. On the other hand, the Harley-Davidson Sportster S RH1250S 2021 is noted for its hard chassis and somewhat unwilling turn-in behavior, possibly due to its wider front tire.

In conclusion, both the Kawasaki Z900 2017 and the Harley-Davidson Sportster S RH1250S 2021 offer powerful performance and attractive designs. The Kawasaki Z900 2017 excels in its chassis and engine performance, while the Harley-Davidson Sportster S RH1250S 2021 stands out with its advanced electronics package. However, potential buyers should consider their individual preferences and riding style when choosing between the two models.

Technical Specifications Kawasaki Z900 2017 compared to Harley-Davidson Sportster S RH1250S 2021

Kawasaki Z900 2017
Harley-Davidson Sportster S RH1250S 2021

Engine and Drive Train

Engine typeEngine typeIn lineEngine typeV
BoreBore73.4 mmBore105 mm
StrokeStroke56 mmStroke72.3 mm
Engine powerEngine power125.4 HPEngine power122 HP
Rpm at Max. PowerRpm at Max. Power9,500 rpmRpm at Max. Power7,500 rpm
TorqueTorque98.6 NmTorque125 Nm
Rpm at TorqueRpm at Torque7,700 rpmRpm at Torque6,000 rpm
Compression RatioCompression Ratio11.8 Compression Ratio12
Fuel systemFuel systemInjectionFuel systemInjection
Clutch TypeClutch TypeMultiplate in oil-bathClutch TypeMultiplate in oil-bath
TransmissionTransmissionChainTransmissionBelt
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 ccmDisplacement1,252 ccm

Suspension Front

Front suspensionFront suspensionUpside-Down telescopic forkFront suspensionUpside-Down telescopic fork
DiameterDiameter41 mmDiameter43 mm
TravelTravel120 mmTravel92 mm
AdjustmentAdjustmentPreload, ReboundAdjustmentCompression, Preload, Rebound

Suspension Rear

SuspensionSuspensionSwing armSuspensionSwing arm
Shock absorberShock absorberMonoshockShock absorberMonoshock
Shock mountShock mountDeflectionShock mountDeflection
TravelTravel140 mmTravel51 mm
AdjustmentAdjustmentPreload, ReboundAdjustmentCompression, Preload, Rebound

Chassis

FrameFrameSteelFrameSteel
Frame typeFrame typeDouble cradleFrame typeTubular, Load-bearing engine
RakeRake65 degreeRake60 degree
TrailTrail105 mmTrail148 mm

Brakes Front

TypeTypeDouble diskTypeSingle disk
DiameterDiameter300 mmDiameter320 mm
PistonPistonFour pistonsPistonFour pistons
Shock mountShock mountFixed caliperShock mountFloating caliper
TechnologyTechnologyPetalTechnologyradial, Monoblock

Brakes Rear

TypeTypeDiscTypeDisc
DiameterDiameter250 mmDiameter260 mm
PistonPistonSingle pistonPistonSingle piston

Assistance Systems

Advanced Rider Assistance SystemsAdvanced Rider Assistance SystemsABSAdvanced Rider Assistance SystemsABS, Riding modes, Cornering ABS, Ride by Wire, Cruise control, Traction control

Dimensions and Weights

Front tyre widthFront tyre width120 mmFront tyre width160 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 width180 mm
Rear tyre heightRear tyre height55 %Rear tyre height70 %
Rear tyre diameterRear tyre diameter17 inchRear tyre diameter16 inch
LengthLength2,070 mmLength2,265 mm
WidthWidth820 mmWidth843 mm
HeightHeight1,065 mmHeight1,089 mm
WheelbaseWheelbase1,450 mmWheelbase1,520 mm
Seat HeightSeat Height795 mmSeat Height755 mm
Kerb Weight (with ABS)Kerb Weight (with ABS)210 kgKerb Weight (with ABS)228 kg
License compliancyLicense compliancyALicense compliancyA

Pros and Cons in comparison

Pros and Cons in comparison

Kawasaki Z900 2017

Kawasaki Z900 2017

An incredibly well-designed motorbike. A lot of test work and attention to detail went into it. It has exactly the right power, exactly the right chassis and exactly the right look. An all-round successful naked bike that will make you happy for a long time. If you like, you can ride it simply and faithfully, but if you want, you can also ride it really fast and it wheels like hell. Great!

Ingenious nakedbike chassis

superb looks

engine responds super fine, revs up willingly and has a perfectly dimensioned torque

optimum intersection of performance, price and practical use

Knee angle very narrow for tall people (order another seat!)

Harley-Davidson Sportster S RH1250S 2021

Harley-Davidson Sportster S RH1250S 2021

The Sportster S returns to the tradition of this model series - yes, it really used to be about sport! That's why the latest American creation, with its 122 hp and 125 Nm of torque, doesn't want to be a cruiser, but instead is almost classless in its pursuit of customers. What is on offer is a wonderful poser bike that is surprisingly easy to ride. The single-disc brake at the front works well and the fat 160 front tyre steers better than you would expect. Only the hard suspension makes the rider suffer on longer distances - which of course doesn't matter at all in front of the ice cream parlour. Electronics and safety are top-notch, which mitigates the tidy price for true fans.

Powerful, refined engine

brakes very good for a single-disc system

full electronics package with cornering ABS and lean angle-dependent traction control

Chassis really hard

turn-in behaviour somewhat unwilling due to wide front tyre

Price Comparison Avarage Market Price Kawasaki Z900 vs Harley-Davidson Sportster S RH1250S

There are a few key differences between a Kawasaki Z900 2017 and a Harley-Davidson Sportster S RH1250S 2021. There are the same number of bikes of both models available on the 1000PS.de marketplace, specifically 43. It takes less time to sell a Harley-Davidson Sportster S RH1250S with 73 days compared to 85 days for the Kawasaki Z900. Since model year 2017 1000PS.de editors have written 46 reviews for the Kawasaki Z900 and 7 reviews for the Harley-Davidson Sportster S RH1250S since model year 2021. 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 78,300 views for the first review on Harley-Davidson Sportster S RH1250S published on 13/07/2021.

Price Kawasaki Z900

Model year
Current average market prices

Price Harley-Davidson Sportster S RH1250S

Model year
Current average market prices

Alternative Comparisons

1000PS Partner

ChigeeContinental MotorradreifenMotorex AGcalimoto GmbH