Built around Kawasaki's naked motorcycle platform, the 2021 Kawasaki Z1000 utilizes a 1043 cc (63.6 cu in) liquid-cooled in-line four, four-stroke layout. In factory specification, peak output is rated at 140.1 HP (102.3 kW) at 10,000 rpm while maximum torque reaches 111 Nm (81.9 lb-ft) at 7,300 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 134.3 HP per liter and a 2,700 rpm working window between peak torque (7,300 rpm) and peak power (10,000 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the Z1000 measures 221 kg (487 lbs) wet (curb), translating to a power-to-weight ratio of 0.63 HP/kg (1.58 kg per horsepower). Rider ergonomics and chassis geometry center around a 815 mm (32.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,435 mm (56.5 in) wheelbase engineered for balanced agility and highway composure. The 17-liter (4.5 US gal) fuel tank paired with a rated consumption of 5.5 L/100 km provides an estimated theoretical range of roughly 309 km (192 miles) between fill-ups.
Within MotoLibrary's Kawasaki archive, this model family spans 14 indexed model years from 2007 to 2024, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
134.3 HP/L
Power-to-Weight
0.63 HP/kg (1.58 kg/HP)
Power Band Window
7,300–10,000 rpm
Theoretical Range
~309 km (192 mi)
Engine
Displacement1043.0 ccm (63.64 cubic inches)
Engine TypeIn-line four, four-stroke
Power140.1 HP (102.3 kW)) @ 10000 RPM
Torque111.0 Nm (11.3 kgf-m or 81.9 ft.lbs) @ 7300 RPM
Compression11.8:1
Bore x Stroke77.0 x 56.0 mm (3.0 x 2.2 inches)
Valves/Cylinder4
Fuel SystemInjection. Ø38 mm x 4 (Keihin) with oval sub-throttles
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionDigital
LubricationForced lubrication, wet sump
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchWet multi-disc, manual
DrivelineSealed chain
Performance
Fuel Consumption5.50 litres/100 km (18.2 km/l or 42.77 mpg)
Greenhouse Gases127.6 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame TypeTwin-tube, aluminium
Rake24.5°
Trail104 mm (4.1 inches)
Front Suspension41 mm inverted fork with top-out springs, stepless compression and rebound damping and spring preload adjustability
Front Travel120 mm (4.7 inches)
Rear SuspensionHorizontal Back-link, gas-charged shock, with stepless rebound damping and spring preload adjustability
Rear Travel135 mm (5.3 inches)
Wheelbase1435 mm (56.5 inches)
Ground Clearance125 mm (4.9 inches)
Wheels & Brakes
Front Tyre120/70-ZR17
Rear Tyre190/50-ZR17
Front BrakesDouble disc. Dual semi-floating 310mm petal discs
Front Brake Ø310 mm (12.2 inches)
Rear BrakesSingle disc. Single 250mm petal disc, Caliper:Single-piston
Rear Brake Ø250 mm (9.8 inches)
Dimensions & Weight
Weight incl.221.0 kg (487.2 pounds)
Seat Height815 mm (32.1 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
