Positioned in KTM's cross - motocross motorcycle lineup, the 1990 KTM 500 MX utilizes a 498 cc (30.4 cu in) liquid-cooled single cylinder, two-stroke layout. In factory specification, peak output is rated at 65 HP (47.4 kW) at 5,900 rpm while maximum torque reaches 80 Nm (59 lb-ft) at 2,000 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 130.5 HP per liter and a 3,900 rpm working window between peak torque (2,000 rpm) and peak power (5,900 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 500 MX measures 103 kg (227 lbs) dry, translating to a power-to-weight ratio of 0.63 HP/kg (1.58 kg per horsepower). Rider ergonomics and chassis geometry center around a 965 mm (38 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control. The 12.11-liter (3.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
130.5 HP/L
Power-to-Weight
0.63 HP/kg (1.58 kg/HP)
Power Band Window
2,000–5,900 rpm
Standover Height
965 mm (38 in)
Engine
Displacement498.0 ccm (30.39 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power65.0 HP (47.4 kW)) @ 5900 RPM
Torque80.0 Nm (8.2 kgf-m or 59.0 ft.lbs) @ 2000 RPM
Bore x Stroke89.0 x 80.0 mm (3.5 x 3.1 inches)
Fuel SystemCarburettor. Dell´Orto VHSP 38
Ignitionmotoplat 176-1
CoolingLiquid
Transmission
Final DriveChain (final drive)
ClutchWet 9 plates
Chassis
Trail300 mm (11.8 inches)
Front Travel300 mm (11.8 inches)
Rear SuspensionWP
Rear Travel340 mm (13.4 inches)
Ground Clearance381 mm (15.0 inches)
Wheels & Brakes
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight103.0 kg (227.1 pounds)
Power/Weight0.6311 HP/kg
Seat Height965 mm (38.0 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.
