Positioned in Moto Guzzi's enduro - offroad motorcycle lineup, the 1989 Moto Guzzi NTX 650 relies on a 644 cc (39.3 cu in) air-cooled twin, four-stroke powerplant. In factory specification, peak output is rated at 50 HP (36.5 kW) at 7,050 rpm while maximum torque reaches 49 Nm (36.1 lb-ft) at 4,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and shaft drive (cardan) final drive. With a specific output of 77.6 HP per liter and a 3,050 rpm working window between peak torque (4,000 rpm) and peak power (7,050 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 NTX 650 measures 170 kg (375 lbs) dry, translating to a power-to-weight ratio of 0.29 HP/kg (3.4 kg per horsepower). The 32-liter (8.5 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 165 km/h (102 mph).
Specific Output
77.6 HP/L
Power-to-Weight
0.29 HP/kg (3.4 kg/HP)
Power Band Window
4,000–7,050 rpm
Engine
Displacement644.0 ccm (39.30 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsTwin, four-stroke
Power50.0 HP (36.5 kW)) @ 7050 RPM
Torque49.0 Nm (5.0 kgf-m or 36.1 ft.lbs) @ 4000 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.
