BMW S 1000 R 2021 vs. Kawasaki Z900 70kW 2018

BMW S 1000 R 2021

BMW S 1000 R 2021

Kawasaki Z900 70kW 2018

Kawasaki Z900 70kW 2018

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Overview - BMW S 1000 R 2021 vs Kawasaki Z900 70kW 2018

The BMW S 1000 R 2021 and the Kawasaki Z900 70kW 2018 are both naked bikes with similar engine types, inline four-cylinder engines. However, there are several differences between the two models in terms of power, torque, suspension, chassis, brakes, assistance systems, dimensions, and weights.

In terms of engine power, the BMW S 1000 R 2021 is significantly more powerful with 165 HP compared to the Kawasaki Z900 70kW 2018, which has 95 HP. This means that the BMW S 1000 R 2021 will offer a more thrilling and exhilarating riding experience with its high power output.

In terms of torque, the BMW S 1000 R 2021 also has an advantage with 114 Nm compared to the Kawasaki Z900 70kW 2018, which has 91.2 Nm. This means that the BMW S 1000 R 2021 will have better acceleration and pulling power, especially at higher speeds.

Both bikes have fuel injection systems and liquid cooling, ensuring efficient and reliable performance. They also have four cylinders, providing smooth power delivery and a balanced ride.

In terms of suspension, both bikes feature upside-down telescopic forks at the front and swing arm suspension with monoshock absorbers at the rear. However, the BMW S 1000 R 2021 offers more adjustability with compression, preload, and rebound adjustments for both the front and rear suspension. The Kawasaki Z900 70kW 2018 only offers preload and rebound adjustments for the front and rear suspension.

BMW S 1000 R 2021

BMW S 1000 R 2021

In terms of chassis, the BMW S 1000 R 2021 has an aluminum frame with a twin tube design, which offers a good balance between rigidity and weight. The Kawasaki Z900 70kW 2018, on the other hand, has a steel frame with a double cradle design, which may be slightly heavier but provides good stability.

Both bikes have double disc brakes at the front with four-piston calipers. However, the BMW S 1000 R 2021 has larger diameter discs at 320 mm compared to the 300 mm discs on the Kawasaki Z900 70kW 2018. The BMW S 1000 R 2021 also features radial brake technology, which provides better braking performance and control.

In terms of assistance systems, the BMW S 1000 R 2021 offers a wide range of advanced rider assistance systems, including ABS, hill start assist, riding modes, cornering ABS, ride by wire, traction control, and anti-wheelie. The Kawasaki Z900 70kW 2018, on the other hand, only offers ABS.

In terms of dimensions and weights, both bikes have a front tire width of 120 mm and a front tire diameter of 17 inches. The BMW S 1000 R 2021 has a slightly wider rear tire at 190 mm compared to the 180 mm rear tire on the Kawasaki Z900 70kW 2018. Both bikes have a wheelbase of 1450 mm, providing good stability and handling. However, the seat height is slightly higher on the BMW S 1000 R 2021 at 830 mm compared to the 795 mm seat height on the Kawasaki Z900 70kW 2018. The BMW S 1000 R 2021 also has a lower curb weight with ABS at 199 kg compared to the 210 kg curb weight of the Kawasaki Z900 70kW 2018.

Kawasaki Z900 70kW 2018

Kawasaki Z900 70kW 2018

In terms of strengths, the BMW S 1000 R 2021 offers a powerful engine, good brakes, comfortable ergonomics, and a range of high-performance optional extras. It is also praised for its simple operation and impressive speed, making it a great all-rounder.

The Kawasaki Z900 70kW 2018, on the other hand, is praised for its smooth engine with punch at around 6000 rpm, finely controllable brakes, and smooth running engine, which is ideal for city traffic. It is also stable at motorway speeds and offers good handling.

In terms of weaknesses, the BMW S 1000 R 2021 is criticized for its quickshifter, which is good but not perfect, and its sound, which can still be a bit intrusive. Some riders also experience vibrations in the handlebars.

The Kawasaki Z900 70kW 2018 is criticized for being quite small for tall people and having a relatively high weight of 210 kg, which affects its acceleration, especially with its lower power output of 48 hp.

In conclusion, the BMW S 1000 R 2021 and the Kawasaki Z900 70kW 2018 are both impressive naked bikes with their own strengths and weaknesses. The BMW S 1000 R 2021 offers more power, better torque, more adjustable suspension, a lighter chassis, larger diameter brakes, and a wider range of advanced rider assistance systems. On the other hand, the Kawasaki Z900 70kW 2018 offers a smooth engine, finely controllable brakes, good handling, and stability at higher speeds. Ultimately, the choice between the two models will depend on the rider's preferences and priorities.

Technical Specifications BMW S 1000 R 2021 compared to Kawasaki Z900 70kW 2018

BMW S 1000 R 2021
Kawasaki Z900 70kW 2018

Engine and Drive Train

Engine typeEngine typeIn lineEngine typeIn line
BoreBore80 mmBore73.4 mm
StrokeStroke49.7 mmStroke56 mm
Engine powerEngine power165 HPEngine power95 HP
Rpm at Max. PowerRpm at Max. Power11,000 rpmRpm at Max. Power8,500 rpm
TorqueTorque114 NmTorque91.2 Nm
Rpm at TorqueRpm at Torque9,250 rpmRpm at Torque6,500 rpm
Compression RatioCompression Ratio12.5 Compression Ratio11.8
Fuel systemFuel systemInjectionFuel systemInjection
Throttle BoreThrottle Bore48 mmThrottle Bore36 mm
Clutch TypeClutch TypeMultiplate in oil-bath, AntihoppingClutch TypeMultiplate in oil-bath
TransmissionTransmissionChainTransmissionChain
Transmission TypeTransmission TypeGearshiftTransmission TypeGearshift
Number of gearsNumber of gears6Number of gears6
CylindersCylinders4Cylinders4
StrokesStrokes4-StrokeStrokes4-Stroke
Valves per cylinderValves per cylinder4Valves per cylinder4
ValvesValvesDOHC, Drag leverValvesDOHC
CoolingCoolingliquidCoolingliquid
DisplacementDisplacement999 ccmDisplacement948 ccm

Suspension Front

Front suspensionFront suspensionUpside-Down telescopic forkFront suspensionUpside-Down telescopic fork
DiameterDiameter45 mmDiameter41 mm
TravelTravel120 mmTravel120 mm
AdjustmentAdjustmentCompression, Preload, ReboundAdjustmentPreload, Rebound

Suspension Rear

SuspensionSuspensionSwing armSuspensionSwing arm
Shock absorberShock absorberMonoshockShock absorberMonoshock
TravelTravel117 mmTravel140 mm
AdjustmentAdjustmentCompression, Preload, ReboundAdjustmentPreload, Rebound

Chassis

FrameFrameAluminiumFrameSteel
Frame typeFrame typeTwin TubeFrame typeDouble cradle
RakeRake66 degreeRake65 degree
TrailTrail96.3 mmTrail105 mm

Brakes Front

TypeTypeDouble diskTypeDouble disk
DiameterDiameter320 mmDiameter300 mm
PistonPistonFour pistonsPistonFour pistons
TechnologyTechnologyradialTechnologyPetal

Brakes Rear

TypeTypeDiscTypeDisc
DiameterDiameter220 mmDiameter250 mm
PistonPistonSingle pistonPistonSingle piston

Assistance Systems

Advanced Rider Assistance SystemsAdvanced Rider Assistance SystemsABS, Hill start assist, Riding modes, Cornering ABS, Ride by Wire, Traction control, Anti-wheelieAdvanced 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 width190 mmRear tyre width180 mm
Rear tyre heightRear tyre height55 %Rear tyre height55 %
Rear tyre diameterRear tyre diameter17 inchRear tyre diameter17 inch
LengthLength2,090 mmLength2,070 mm
WidthWidth812 mmWidth820 mm
WheelbaseWheelbase1,450 mmWheelbase1,450 mm
Seat HeightSeat Height830 mmSeat Height795 mm
Kerb Weight (with ABS)Kerb Weight (with ABS)199 kgKerb Weight (with ABS)210 kg
License compliancyLicense compliancyALicense compliancyA

Pros and Cons in comparison

Pros and Cons in comparison

BMW S 1000 R 2021

BMW S 1000 R 2021

It's really impressive how BMW always manages to make good motorbikes even better. The sporty S 1000 R with M package and carbon rims looks a bit threatening at first. But even in 2021, the S 1000 R serves up high-tech and performance in a grandiose, usable dosage. The machine rides precisely, handles well but is not tippy. The engine fires out of the corners, but does not overtax. A damn fast motorbike!

Powerful engine

good brakes

comfortable ergonomics

high-priced but high-performance optional extras

simple operation but still very fast

great all-rounder.

Quickshifter good, but not perfect, sound still a bit intrusive

still with vibrations in handlebars

Kawasaki Z900 70kW 2018

Kawasaki Z900 70kW 2018

The Z900 is a top entry-level motorbike. Very smooth engine, great brakes and lots of adjustment options on the chassis and levers. The acceleration may be too good for speed junkies, but it's just right for learning. The lack of electronic gimmicks, riding modes and traction control doesn't bother either, but makes the Z900 a good bike to learn the basics of two-wheeled locomotion. A high-quality purist, a real motorbike, even with only 48 hp!

Smooth engine with punch at approx. 6000 rpm

Finely controllable brakes

Smooth running of the engine super for city traffic

Typical 4-cylinder shriek, but very restrained at low revs

Stable at motorway speeds

Good handling

Quite small for tall people

rather high weight of 210 kg

acceleration with 48 hp rather poor due to weight

Price Comparison Avarage Market Price BMW S 1000 R vs Kawasaki Z900 70kW

There are a few key differences between a BMW S 1000 R 2021 and a Kawasaki Z900 70kW 2018. In terms of price, the actual average price of a BMW S 1000 R 2021 is about 94% higher. Compared to Kawasaki Z900 70kW 2018 there are more BMW S 1000 R 2021 bikes available on the 1000PS.de Marketplace, specifically 15 compared to 5. It takes less time to sell a BMW S 1000 R with 67 days compared to 194 days for a Kawasaki Z900 70kW. Since model year 2014 1000PS.de editors have written 62 reviews for the BMW S 1000 R and 10 reviews for the Kawasaki Z900 70kW since model year 2018. The first review for the BMW S 1000 R was published on 11/3/2013 and now has more than 17,300 views. This compares to more than 104,300 views for the first review on Kawasaki Z900 70kW published on 11/23/2018.

Price BMW S 1000 R

Model year
Current average market prices

Price Kawasaki Z900 70kW

Model year
Current average market prices

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