Engineered by Kawasaki for the classic motorcycle segment, the 2020 Kawasaki Z900RS pairs a 948 cc (57.9 cu in) liquid-cooled in-line four, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 110 HP (80.3 kW) at 8,500 rpm while maximum torque reaches 98.5 Nm (72.7 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 116 HP per liter and a 2,000 rpm working window between peak torque (6,500 rpm) and peak power (8,500 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 Z900RS measures 214.1 kg (472 lbs) wet (curb), translating to a power-to-weight ratio of 0.51 HP/kg (1.95 kg per horsepower). Rider ergonomics and chassis geometry center around a 836 mm (32.9 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,470 mm (57.9 in) wheelbase engineered for balanced agility and highway composure. The 17.03-liter (4.5 US gal) fuel tank paired with a rated consumption of 5.3 L/100 km provides an estimated theoretical range of roughly 321 km (199 miles) between fill-ups.
Within MotoLibrary's Kawasaki archive, this model family spans 7 indexed model years from 2018 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
116 HP/L
Power-to-Weight
0.51 HP/kg (1.95 kg/HP)
Power Band Window
6,500–8,500 rpm
Theoretical Range
~321 km (199 mi)
Engine
Displacement948.0 ccm (57.85 cubic inches)
Engine TypeIn-line four, four-stroke
Power110.0 HP (80.3 kW)) @ 8500 RPM
Torque98.5 Nm (10.0 kgf-m or 72.7 ft.lbs) @ 6500 RPM
Compression10.8:1
Bore x Stroke73.4 x 56.0 mm (2.9 x 2.2 inches)
Valves/Cylinder4
Fuel SystemInjection. DFI with 36mm Keihin throttle bodies
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionTCBI with electronic advance
LubricationForced lubrication, wet sump
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchWet multi-disc, manual
DrivelineSealed chain
Performance
Fuel Consumption5.30 litres/100 km (18.9 km/l or 44.38 mpg)
Greenhouse Gases123.0 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame TypeTubular, diamond
Rake25.0°
Trail98 mm (3.9 inches)
Front SuspensionInverted telescopic fork with (10-way) adjustable compression and rebound (12-way) damping, spring preload
Front Travel119 mm (4.7 inches)
Rear SuspensionHorizontal back-link swingarm with stepless adjustable rebound damping and spring preload
Rear Travel140 mm (5.5 inches)
Wheelbase1470 mm (57.9 inches)
Ground Clearance130 mm (5.1 inches)
Wheels & Brakes
Front Tyre120/70-ZR17
Rear Tyre180/55-ZR17
Front BrakesDouble disc. ABS. Four-piston calipers.
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.
