At the heart of the 1987 Yamaha YZ490 cross - motocross motorcycle, Yamaha features a 490 cc (29.9 cu in) air-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 55 HP (40.1 kW) at 7,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 112.2 HP per liter, 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 YZ490 measures 107 kg (236 lbs) dry, translating to a power-to-weight ratio of 0.51 HP/kg (1.95 kg per horsepower).
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.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
