KTM 390 Duke 2021 vs. Kawasaki Z 400 2023

KTM 390 Duke 2021

KTM 390 Duke 2021

Kawasaki Z 400 2023

Kawasaki Z 400 2023

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Overview - KTM 390 Duke 2021 vs Kawasaki Z 400 2023

The KTM 390 Duke 2021 and the Kawasaki Z 400 2023 are both popular naked bikes in their respective model years. While they share some similarities in terms of engine power, torque, fuel system, and dimensions, there are also notable differences between the two.

In terms of engine power, the KTM 390 Duke 2021 has 44 HP, while the Kawasaki Z 400 2023 has a slightly higher power output of 45 HP. Similarly, the torque of the KTM 390 Duke is 35 Nm, while the Kawasaki Z 400 offers a slightly higher torque of 37 Nm. Both bikes have fuel injection systems and liquid cooling.

The KTM 390 Duke 2021 features a single-cylinder engine with a displacement of 373.2 ccm, while the Kawasaki Z 400 2023 has a twin-cylinder engine with a displacement of 399 ccm. This difference in the number of cylinders may result in variations in engine characteristics and performance.

KTM 390 Duke 2021

KTM 390 Duke 2021

In terms of suspension, the KTM 390 Duke 2021 is equipped with an upside-down telescopic fork at the front, while the Kawasaki Z 400 2023 features a telescopic fork. Both bikes have tubular frames, with the KTM 390 Duke having a chromium-molybdenum frame and the Kawasaki Z 400 having a steel frame.

Both bikes have single-disc front brakes, but there are differences in the brake specifications. The KTM 390 Duke 2021 has a front brake diameter of 320 mm with four pistons and radial technology, while the Kawasaki Z 400 2023 has a front brake diameter of 310 mm with double pistons and petal technology.

Both bikes are equipped with ABS as part of their advanced rider assistance systems. They have the same front and rear tire dimensions, with a width of 110 mm and a diameter of 17 inches. The wheelbase of the KTM 390 Duke 2021 is 1367 mm, while the Kawasaki Z 400 2023 has a slightly longer wheelbase of 1370 mm. The seat height of the KTM 390 Duke is 830 mm, whereas the Kawasaki Z 400 offers a lower seat height of 785 mm. Additionally, the Kawasaki Z 400 has a slightly larger fuel tank capacity of 14 liters compared to the 13.4 liters of the KTM 390 Duke.

Kawasaki Z 400 2023

Kawasaki Z 400 2023

In terms of strengths, the KTM 390 Duke 2021 offers typical Duke ergonomics suitable for taller riders, extremely agile handling, a sporty engine with great handling, a modern TFT display with smartphone connectivity, and a top price-performance ratio for an A2 motorbike. The Kawasaki Z 400 2023, on the other hand, boasts a lively engine, good chassis and brakes, easy handling, a grown-up look, and high-quality workmanship.

However, there are also weaknesses to consider. The KTM 390 Duke 2021 has a chassis that is tuned a little too soft and a slightly spongy pressure point of the brakes. The Kawasaki Z 400 2023, on the other hand, has non-adjustable levers.

Overall, both the KTM 390 Duke 2021 and the Kawasaki Z 400 2023 offer their own unique strengths and weaknesses. It ultimately comes down to personal preference and priorities when choosing between the two bikes.

Technical Specifications KTM 390 Duke 2021 compared to Kawasaki Z 400 2023

KTM 390 Duke 2021
Kawasaki Z 400 2023

Engine and Drive Train

BoreBore89 mmBore70 mm
StrokeStroke60 mmStroke51.8 mm
Engine powerEngine power44 HPEngine power45 HP
Rpm at Max. PowerRpm at Max. Power9,500 rpmRpm at Max. Power10,000 rpm
TorqueTorque35 NmTorque37 Nm
Rpm at TorqueRpm at Torque7,250 rpmRpm at Torque8,000 rpm
Compression RatioCompression Ratio12.6 Compression Ratio11.5
Fuel systemFuel systemInjectionFuel systemInjection
StarterStarterElectricStarterElectric
Clutch TypeClutch TypeMultiplate in oil-bathClutch TypeMultiplate in oil-bath
TransmissionTransmissionChainTransmissionChain
Number of gearsNumber of gears6Number of gears6
CylindersCylinders1Cylinders2
StrokesStrokes4-StrokeStrokes4-Stroke
CoolingCoolingliquidCoolingliquid
DisplacementDisplacement373.2 ccmDisplacement399 ccm

Suspension Front

Front suspensionFront suspensionUpside-Down telescopic forkFront suspensionTelescopic fork
DiameterDiameter43 mmDiameter41 mm
TravelTravel142 mmTravel120 mm

Suspension Rear

TravelTravel150 mmTravel130 mm

Chassis

FrameFrameChromium-molybdenumFrameSteel
Frame typeFrame typeTubularFrame typeTubular
RakeRake65 degreeRake65.5 degree

Brakes Front

TypeTypeSingle diskTypeSingle disk
DiameterDiameter320 mmDiameter310 mm
PistonPistonFour pistonsPistonDouble piston
Shock mountShock mountFloating caliperShock mountSemi-Schwimmsattel
TechnologyTechnologyradialTechnologyPetal

Brakes Rear

TypeTypeDiscTypeDisc
DiameterDiameter230 mmDiameter220 mm
PistonPistonSingle pistonPistonDouble piston
Shock mountShock mountFloating caliperShock mountFloating caliper

Assistance Systems

Advanced Rider Assistance SystemsAdvanced Rider Assistance SystemsABSAdvanced Rider Assistance SystemsABS

Dimensions and Weights

Front tyre widthFront tyre width110 mmFront tyre width110 mm
Front tyre heightFront tyre height70 %Front tyre height70 %
Front tyre diameterFront tyre diameter17 inchFront tyre diameter17 inch
Rear tyre widthRear tyre width150 mmRear tyre width150 mm
Rear tyre heightRear tyre height60 %Rear tyre height60 %
Rear tyre diameterRear tyre diameter17 inchRear tyre diameter17 inch
WheelbaseWheelbase1,367 mmWheelbase1,370 mm
Seat HeightSeat Height830 mmSeat Height785 mm
Fuel Tank CapacityFuel Tank Capacity13.4 lFuel Tank Capacity14 l
License compliancyLicense compliancyA2License compliancyA2
Combined CO2 emissionsCombined CO2 emissions80 g/kmCombined CO2 emissions91 g/km

Pros and Cons in comparison

Pros and Cons in comparison

KTM 390 Duke 2021

KTM 390 Duke 2021

The KTM 390 Duke is a "real" Duke. The trademark: Extremely agile handling that makes for powerful riding fun. The flyweight 390 can be precisely controlled with its narrow waist and wide handlebars and feels most at home in tight corners. Especially with the Supermoto mode, it is a fun machine without equal. Unfortunately, only the brakes and suspension of the 390 cannot maintain the same, very high performance level as on the 125 Duke or 890 Duke. They feel a bit spongy and not optimally tuned, especially when the rider weighs in a bit more. The equipment is otherwise tip-top, especially when you consider the price of the 390 Duke. In terms of riding pleasure/euros, it outperforms most, including its Duke sisters.

Typical Duke ergonomics that are also suitable for taller riders

Extremely agile handling thanks to flyweight and narrow waist

Sporty engine with great handling

Modern TFT display with smartphone connectivity

Supermoto mode is a pleasure

Quickshifter (optional) works perfectly

Adjustable hand levers

Top price-performance ratio for A2 motorbike.

Chassis tuned a little too soft

pressure point of the brakes a little spongy

Kawasaki Z 400 2023

Kawasaki Z 400 2023

A cool and sensible entry into the A2 class. The Kawasaki Z400 scores points all along the line with its instinctive handling and the in-line two-cylinder, which convinces with good response and sufficient power. You can't go wrong with this naked bike and you can overlook the fact that the levers are not adjustable - after all, costs have to be saved somewhere.

lively engine

good chassis and brakes

easy handling

grown-up look

high-quality workmanship

Non-adjustable levers

Price Comparison Avarage Market Price KTM 390 Duke vs Kawasaki Z 400

There are a few key differences between a KTM 390 Duke 2021 and a Kawasaki Z 400 2023. In terms of price, the actual average price of a Kawasaki Z 400 2023 is about 9% higher. Compared to Kawasaki Z 400 2023 there are less KTM 390 Duke 2021 bikes available on the 1000PS.de Marketplace, specifically 15 compared to 89. It takes less time to sell a KTM 390 Duke with 82 days compared to 123 days for a Kawasaki Z 400. Since model year 2013 1000PS.de editors have written 33 reviews for the KTM 390 Duke and 8 reviews for the Kawasaki Z 400 since model year 2019. The first review for the KTM 390 Duke was published on 12/11/2012 and now has more than 26,300 views. This compares to more than 23,200 views for the first review on Kawasaki Z 400 published on 02/10/2018.

Price KTM 390 Duke

Model year
Current average market prices

Price Kawasaki Z 400

Model year
Current average market prices

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