Z1B Z900

1976 Kawasaki Z1B Z900 Technical Analysis & Specification Breakdown

At the heart of the 1976 Kawasaki Z1B Z900 classic motorcycle, Kawasaki 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 73.6 Nm (54.3 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.