Kawasaki Ninja 1000SX SE - 2021 Specifications and Reviews

The 2021 Kawasaki Ninja 1000SX SE is a versatile middleweight sport bike powered by a 1043cc inline-four engine producing 140 horsepower, making it ideal for riders seeking a blend of performance and everyday practicality. Known for its agile handling, comfortable ergonomics, and strong mid-range torque, this model excels as an all-around platform for both spirited road riding and longer commutes.

2021
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General information

CategorySport
Year2021
ModelKawasaki Ninja 1000SX SE

Engine and Transmission Specifications

DrivelineSealed Chain
ClutchWet multi-disc, manual
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
Lubrication systemForced lubrication, wet sump with oil cooler
IgnitionTCBI with digital advance
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemInjection. DFI w/38mm Keihin throttle bodies (4) and oval sub-throttles
Valves per Cylinder4
Bore x Stroke77.0 x 56.0 mm (3.0 x 2.2 inches)
Compression11.8:1
Torque111.0 Nm (11.3 kgf-m or 81.9 ft.lbs) @ 8000 RPM
Power140.1 HP (102.3 kW) @ 10000 RPM
Engine typeIn-line four, four-stroke
Capacity:1043.0 ccm (63.64 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakesSingle disc. ABS. Single-piston caliper.
Diameter267 mm (10.5 inches)
Front brakesDouble disc. ABS. Four-piston calipers. Radially mounted.
Rear tire190/50-ZR17
Front tire120/70-ZR17
Rear wheel travel144 mm (5.7 inches)
Rear SuspensionHorizontal back-link
Front wheel travel120 mm (4.7 inches)
Front SuspensionTelescopic fork
Trail99 mm (3.9 inches)
Rake (fork angle)24.0°
Frame typeAluminum backbone

Physical measures and capacities

Fuel capacity17.00 litres (4.49 US gallons)
Wheelbase1440 mm (56.7 inches)
Ground clearance130 mm (5.1 inches)
Overall width825 mm (32.5 inches)
Overall length2100 mm (82.7 inches)
Overall height1190 mm (46.9 inches)
Seat height835 mm (32.9 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc235.0 kg (518.1 pounds)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Factory warranty24 Month Limited Warranty
StarterElectric
Color optionsEmerald Blazed Green/ Metallic Diablo Black and Metallic Flat Spark Black

Performance Profile & Rider Fit

140.1 hp
Peak Power
3.2s
0-60 mph

Best For

Track65%
City65%
Cornering82%
Daily Riding80%
Touring88%
Passenger80%

Rider Profile

Best ForBest suited to intermediate and experienced riders who can manage strong midrange power and a sporty riding position over long stretches.
PurposeBuilt as a sport-touring machine that blends fast in-line four performance with weather protection and luggage-friendly ergonomics for covering big miles quickly.
Rider FitThe 835mm seat height and 235kg wet weight demand reasonable rider confidence and leg strength, especially at low speed or when fully loaded with luggage and a passenger.
CharacterA refined, muscular sport-tourer that rewards a smooth throttle hand with strong top-end power, stable high-speed handling, and comfortable long-distance manners.
Not Ideal ForNot a fit for off-road exploration or riders seeking a lightweight, budget-friendly commuter, given its road-only tires, weight, and premium positioning.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 Kawasaki Ninja 1000SX SE Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 835mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with balls of both feet on the 2021 Kawasaki Ninja 1000SX SE, with a cramped knee angle of around 75 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2021 Kawasaki Ninja 1000SX SE is an impressive sport-touring motorcycle that offers a perfect balance of performance and comfort. The 1,043cc engine provides plenty of power for thrilling acceleration, while the upright riding position and comfortable seat make long rides a breeze. The SE model comes with various advanced features such as electronic cruise control, TFT display, and smartphone connectivity, adding convenience and modern technology to the riding experience. Overall, the 2021 Kawasaki Ninja 1000SX SE is a fantastic choice for riders looking for a versatile and capable sport-touring motorcycle. Whether you're hitting the open road for a long-distance trip or navigating through urban streets, this bike delivers on both performance and comfort. With its advanced features and powerful engine, the Ninja 1000SX SE is a top contender in the sport-touring category, offering a well-rounded riding experience for motorcycle enthusiasts.
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