Positioned in Kawasaki's naked motorcycle lineup, the 1976 Kawasaki Z1-B relies on a 903 cc (55.1 cu in) air-cooled in-line four, four-stroke powerplant. In factory specification, peak output is rated at 82 HP (59.9 kW) at 8,500 rpm while maximum torque reaches 71.9 Nm (53 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 90.8 HP per liter and a 1,500 rpm working window between peak torque (7,000 rpm) and peak power (8,500 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the Z1-B measures 233 kg (514 lbs) dry, translating to a power-to-weight ratio of 0.35 HP/kg (2.84 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,490 mm (58.7 in) wheelbase engineered for balanced agility and highway composure. The 18-liter (4.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
90.8 HP/L
Power-to-Weight
0.35 HP/kg (2.84 kg/HP)
Power Band Window
7,000–8,500 rpm
Engine
Displacement903.0 ccm (55.10 cubic inches)
Engine TypeIn-line four, four-stroke
Engine DetailsIn-line four, four-stroke
Power82.0 HP (59.9 kW)) @ 8500 RPM
Torque71.9 Nm (7.3 kgf-m or 53.0 ft.lbs) @ 7000 RPM
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.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
