Built around Kawasaki's sport touring motorcycle platform, the 1977 Kawasaki KZ750 relies on a 745 cc (45.5 cu in) air-cooled twin, four-stroke powerplant. In factory specification, peak output is rated at 55 HP (40.1 kW) at 7,000 rpm while maximum torque reaches 60 Nm (44.3 lb-ft) at 3,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 73.8 HP per liter and a 4,000 rpm working window between peak torque (3,000 rpm) and peak power (7,000 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 KZ750 measures 218 kg (481 lbs) dry, translating to a power-to-weight ratio of 0.25 HP/kg (3.96 kg per horsepower). Rider ergonomics and chassis geometry center around a 845 mm (33.3 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,450 mm (57.1 in) wheelbase engineered for balanced agility and highway composure. The 14.5-liter (3.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
73.8 HP/L
Power-to-Weight
0.25 HP/kg (3.96 kg/HP)
Power Band Window
3,000–7,000 rpm
Standover Height
845 mm (33.3 in)
Engine
Displacement745.0 ccm (45.46 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsTwin, four-stroke
Power55.0 HP (40.1 kW)) @ 7000 RPM
Torque60.0 Nm (6.1 kgf-m or 44.3 ft.lbs) @ 3000 RPM
Compression8.5:1
Bore x Stroke78.0 x 78.0 mm (3.1 x 3.1 inches)
Valves/Cylinder2
Fuel SystemCarburettor. Mikuni BS 38 x 2
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionBattery and coil
LubricationForced lubrication wet sump
CoolingAir
Max RPM7500
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, multi-disc
Performance
ExhaustDouble stainless steel pipes
Chassis
Frame TypeTubular steel, double cradle
Rake26.5°
Trail105 mm (4.1 inches)
Front SuspensionTelescopic fork
Front Travel140 mm (5.5 inches)
Rear SuspensionSwing arm
Rear Travel80 mm (3.1 inches)
Wheelbase1450 mm (57.1 inches)
Ground Clearance155 mm (6.1 inches)
Wheels & Brakes
Front Tyre3.25H-19 4PR
Rear Tyre4.00H-18 4PR
Front BrakesSingle disc. Single piston floating
Front Brake Ø245 mm (9.6 inches)
Rear BrakesSingle disc. Single piston floating
Rear Brake Ø230 mm (9.1 inches)
Dimensions & Weight
Dry Weight218.0 kg (480.6 pounds)
Power/Weight0.2523 HP/kg
Seat Height845 mm (33.3 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.
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
