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Motorcycles Specs > Yamaha > Yamaha YZ490

Yamaha YZ490 Specs

The Yamaha YZ490 model is a Cross / motocross bike manufactured by Yamaha . In this version sold from year 1987 , the dry weight is 107.0 kg (236.0 pounds) and it is equiped with a Single cylinder, two-stroke motor. The engine produces a maximum peak output power of 55.00 HP (40.1 kW) @ 7000 RPM and a maximum torque of  . With this drive-train, the Yamaha YZ490 is capable of reaching a maximum top speed of  . Regarding the chassis characteristics, responsible for road holding, handling behaviour and ride confort, the Yamaha YZ490 have a steel frame with front suspension being  and in the rear suspension it is equiped with  . Stock tire sizes are  on the front, and  on the rear. As for stopping power, the Yamaha YZ490 braking system includes Single disc size  at the front and Expanding brake (drum brake) size  at the rear. 

Yamaha YZ490 General Information

Brand Yamaha 
Model Yamaha YZ490 
Year 1987 
Year 1987 
Category Cross / motocross 
Factory Warranty (Years / miles)  

Yamaha YZ490 Dimensions, Aerodynamics and weight

Frame type steel 
Seat details  
Wheelbase  
Length  
Width  
Height  
Seat Height  
Alternate Seat Height  
Ground Clearance  
Trail size  
Wheels details  
Front Tyres - Rims dimensions  
Rear Tyres - Rims dimensions  
Front brakes Single disc 
Rear brakes Expanding brake (drum brake) 
Front Brakes Dimensions - Disc Dimensions  
Rear Brakes Dimensions - Disc Dimensions  
Curb Weight (including fluids)  
Dry Weight 107.0 kg (236.0 pounds) 
Front Percentage of Weight  
Rear Percentage of Weight  
Weight-Power Output Ratio : 0.5138 HP/kg 
Fuel Tank Capacity  
Reserve Fuel Capacity  
Carrying Details and Capacity  
Front Suspension  
Front Suspension Travel  
Rear Suspension  
Rear Suspension Travel  

Yamaha YZ490 Engine and Transmission Technical Data

Engine type - Number of cylinders Single cylinder, two-stroke 
Engine details  
Fuel system Carburettor 
Engine size - Displacement - Engine capacity 490.00 ccm (29.90 cubic inches) 
Bore x Stroke  
Compression Ratio  
Number of valves per cylinder  
Camshaft Valvetrain Configuration  
Maximum power - Output - Horsepower 55.00 HP (40.1 kW) @ 7000 RPM 
Maximum torque  
Engine Maximum RPM  
Cooling system Air 
Lubrication system  
Engine oil capacity  
Exhaust system  
Gearbox 5-speed 
Transmission type, final drive ratio Chain 
Clutch type wet plate 
Driveline  

Yamaha YZ490 Performance

Top Speed  
Acceleration 0 to 100 km/h (0 to 62 mph)  
Acceleration 0 to 400m (1/4 mile)  
Recuperation 60 to 140 km/h in highest gear  
Fuel Consumption - MPG - Economy - Efficiency  
CO2 emissions  
Emissions  

Yamaha YZ490 Electrical Systems, Ignition and Equipment

Ignition Type  
Electrical Details  
Starter Type  
Instruments  
Lights