Yamaha Big Bear 400 4x4 IRS Specs
The Yamaha Big Bear 400 4x4 IRS model is a ATV bike manufactured by Yamaha . In this version sold from year 2010 , the dry weight is and it is equiped with a Single cylinder, four-stroke motor. The engine produces a maximum peak output power of and a maximum torque of . With this drive-train, the Yamaha Big Bear 400 4x4 IRS is capable of reaching a maximum top speed of . Regarding the chassis characteristics, responsible for road holding, handling behaviour and ride confort, the Yamaha Big Bear 400 4x4 IRS have a frame with front suspension being Independent double wishbone and in the rear suspension it is equiped with Independent double wishbone . Stock tire sizes are 25/8-AT12 on the front, and 25/10-AT12 on the rear. As for stopping power, the Yamaha Big Bear 400 4x4 IRS braking system includes Double disc size at the front and Double disc size at the rear.
Yamaha Big Bear 400 4x4 IRS General Information
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| Brand |
Yamaha |
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| Model |
Yamaha Big Bear 400 4x4 IRS |
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| Year |
2010 |
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| Year |
2010 |
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| Category |
ATV |
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| Factory Warranty (Years / miles) |
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Yamaha Big Bear 400 4x4 IRS Dimensions, Aerodynamics and weight
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| Frame type |
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| Seat details |
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| Wheelbase |
1,229 mm (48.4 inches) |
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| Length |
2,017 mm (79.4 inches) |
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| Width |
1,115 mm (43.9 inches) |
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| Height |
1,186 mm (46.7 inches) |
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| Seat Height |
894 mm (35.2 inches) If adjustable, lowest setting. |
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| Alternate Seat Height |
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| Ground Clearance |
267 mm (10.5 inches) |
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| Trail size |
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| Wheels details |
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| Front Tyres - Rims dimensions |
25/8-AT12 |
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| Rear Tyres - Rims dimensions |
25/10-AT12 |
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| Front brakes |
Double disc |
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| Rear brakes |
Double disc |
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| Front Brakes Dimensions - Disc Dimensions |
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| Rear Brakes Dimensions - Disc Dimensions |
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| Curb Weight (including fluids) |
284.9 kg (628.0 pounds) |
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| Dry Weight |
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| Front Percentage of Weight |
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| Rear Percentage of Weight |
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| Weight-Power Output Ratio : |
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| Fuel Tank Capacity |
15.14 litres (4.00 gallons) |
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| Reserve Fuel Capacity |
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| Carrying Details and Capacity |
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| Front Suspension |
Independent double wishbone |
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| Front Suspension Travel |
147 mm (5.8 inches) |
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| Rear Suspension |
Independent double wishbone |
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| Rear Suspension Travel |
193 mm (7.6 inches) |
Yamaha Big Bear 400 4x4 IRS Engine and Transmission Technical Data
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| Engine type - Number of cylinders |
Single cylinder, four-stroke |
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| Engine details |
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| Fuel system |
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| Engine size - Displacement - Engine capacity |
421.00 ccm (25.69 cubic inches) |
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| Bore x Stroke |
83.0 x 71.5 mm (3.3 x 2.8 inches) |
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| Compression Ratio |
8.6:1 |
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| Number of valves per cylinder |
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| Camshaft Valvetrain Configuration |
SOHC |
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| Maximum power - Output - Horsepower |
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| Maximum torque |
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| Engine Maximum RPM |
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| Cooling system |
Oil & air |
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| Lubrication system |
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| Engine oil capacity |
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| Exhaust system |
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| Gearbox |
5-speed |
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| Transmission type, final drive ratio |
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| Clutch type |
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| Driveline |
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Yamaha Big Bear 400 4x4 IRS Performance
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| Top Speed |
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| Acceleration 0 to 100 km/h (0 to 62 mph) |
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| Acceleration 0 to 400m (1/4 mile) |
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| Recuperation 60 to 140 km/h in highest gear |
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| Fuel Consumption - MPG - Economy - Efficiency |
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| CO2 emissions |
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| Emissions |
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Yamaha Big Bear 400 4x4 IRS Electrical Systems, Ignition and Equipment
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| Ignition Type |
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| Electrical Details |
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| Starter Type |
Electric |
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| Instruments |
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| Lights |
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