2007 Yamaha Big Bear 400 IRS 5-Speed 4X4 Exploring Edition

2007 Yamaha Big Bear 400 IRS 5-Speed 4X4 Exploring Edition

2007 Yamaha Big Bear 400 IRS 5-Speed 4X4 Exploring Edition Specifications


Engine configuration Single-Cylinder
How many cylinders 1
Types of power cycles Four-stroke
Type of cooling system Air / Oil
Valves 2
Valves Per Cylinder 2
Valve types and configurations Single Overhead Camshaft
Bore (millimeters/inches) 83 / 3.27
Stroke (millimeters/inches) 71.5 / 2.82
Engine displacement (cubic centimeters/cubic inches) 386 / 23.6
Compression Ratio 8.6:1
Starter Type Electric / Pull
Fuel Regular
Type of Fuel Gas
Carb Model Mikuni
Carb +
Number Of Carburetors 1
Carburetor Size (mm) 33
Carburetor system Carb
Governor (device)
Snorkel Air Intake Std


Transmission Type Manual / Automatic Clutch
Number Of Speeds 5
Primary drive front Shaft
Primary Drive (Engine / Transmission) Belt
Reverse +
High low range selector

Wheels & Tires: Front (F), Rear (R):

Rims material Steel
F Tire Diameter 25
R Tire Diameter 25
F Tire Width 8
F Wheel Diameter 12
R Tire Width 10
R Wheel Diameter 12
F Tire Brand AT25 x 8 – 12 ITP Mud Lite
R Tire Brand AT25 x 10 – 12 ITP Mud Lite


Front Dual Hydraulic Disc Brake
Rear Sealed Oil Bath
Engine Braking Std

Suspension: Front (F), Rear (R):

ATV F suspension system Independent Double Wishbone
F Travel (millimeters/inches) 5.9 / 149.9
Front Adjustable Fork Pre-Load +
Front Adjustable Rebound Damping
Front Central Suspension Strut
Steering Damper
F Stabilizer Bar
ATV R suspension system Independent Double Wishbone
R Travel (inches/millimeters) 5.9 / 149.9
Rear Adjustable Shock / Spring Pre-Load +
Rear Adjustable Rebound Damping
ATV R shock absorbers 2
Rear Suspension Material Steel
R Stabilizer Bar
Air Adjustable


Steering system Manual
Steering controller Handlebar

Technical Specifications:

Overall length (foot) 6.58
Overall width (inches/millimeters) 43.7 / 1110
Overall heigth (inches/millimeters) 46.1 / 1170.9
Wheelbase (in/mm) 48.4 / 1229.4
Turning Radius (ft) 10.3
Ground Clearance (in/mm) 9.7 / 246.4
Length (foot/foot) 6
Length (foot/inches) 7
Towing Capacity (lbs/kgs) 904 / 410.1
Fuel tank capacity (gallons/liters) 4 / 15.1
Performance Std


Seat Type One-Piece
Seat adjusting system
Material Vinyl
Seat Location Driver
Folding seat
Seat Height (in/mm) 33.7 / 856
ATV seats 1


ATV frame material Steel
Basic outside panels material Plastic
Floor Board Location Driver
ATV handlebar grips Std
Foot Peg Location Driver
Hand Guards +
BrushGuard +
Radiator Guard
CV Boot Cover +
Shock Cover
Front Fender Std
Rear Fender Std
Hand grips Std
Front Bumper Std
Front Fender Flairs Std
Rear Fender Flairs Std
A-Arm Skid Plate (Front) +
Bash Plate (Front/Rear) Yes / Yes
SwingArm Skid Plate


Odometer Std
Speedometer Std
Over temperature indicator Light
Low fuel level indicator Gauge


Basic warranty (Mo./Condition) 6 / Limited
Battery Warranty (Mo.) 0


ATV Type Utility
Made in Japan
Minimum manufacturer age recommended 16
Parent Company Yamaha
Full name Big Bear 400 IRS 5-Speed 4X4 Exploring Edition


Winch Mount Std

Drive Line:

Driveline Brand On-Command™
Driveline Type Selectable 4X2 / 4X4
Number Of Driveline Modes 2
Rear Unlocking Differential
Rear Solid Axle
Differential Lock Location Front

Towing & Hauling:

Rear Hitch Std


Power Outlet Std


Underseat Storage Std
Capacity (lbs/kgs) 88 / 39.9
Front Rack Storage Material Soft Vinyl
Front Rack Storage Trim Plain
Rack Rails Location Rear


Headlight Mounts Std
Halogen Headlight (s) Std
Headlight (s) Std
Type Halogen

Paint & Finish:

Metallic color

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