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Yamaha Motorsports

YAMAHA'S
BIG BEAR 400 4X4

 

Yamaha's Big Bear 400 4x4
Big Bear 400 4x4


Engine
Drivetrain
Chassis / Suspension
Steering / Braking
Wheels / Tires

 
Features & Benefits

ENGINE

  • Type Air cooled, 4-stroke, SOHC

  • Displacement 386cc

  • Bore & Stroke 83mm x 71.5

  • Compression Ratio 8.6:1

  • Fuel System normally aspirated w/single Mikuni 33mm

  • Ignition system CDI, Electric 12v 12AH


DRIVETRAIN

  • Clutch Wet-type, multiple disc, automatic clutch

  • Transmission Constant mesh, 5-speed with reverse, low 1st gear

  • Primary reduction 2 spur gear - 73/22:3.318

  • Secondary reduction Shaft drive - 20/17x46/11:4.920

  • Gear ratios
    1st 2.923:1
    2nd 1.889:1
    3rd 1.364:1
    4th 1.040:1
    5th .828:1

Yamaha's Big Bear 400 4x4
Big Bears 400 4x4


CHASSIS / SUSPENSION

  • Chassis type Steel tube frame, 4 degree caster angle

  • Overall length 79" 2007mm

  • Overall width 43.7" 1111mm

  • Overall height 46.1" 1172mm

  • Seat height 33.7" 855mm

  • Wheelbase 48.4" 1230mm

  • Ground clearance 9.6" 245mm

  • Dry weight 557lbs 255kg

  • Front suspension Double wishbone, 5.9" wheel travel (155mm)

  • Rear suspension Swingarm (monocross), 5.9" wheel travel (155mm)

  • Shock absorber, front coil spring, oil damper

  • Shock absorber, rear coil spring, oil damper

STEERING / BRAKING

  • Steering type Taper roller bearing

  • Front brake Single disc

  • Rear brake Single sealed hydraulic drum


WHEELS / TIRES

  • Front wheel 12 x 6.0 AT

  • Front tire AT 25 x 8 - 12

  • Rear wheel 12 x 7.5 AT

  • Rear tire AT 25 x 10 - 12

Yamaha's Big Bear 400 4x4
Big Bear 400 4x4


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