2012 Yamaha Big Bear 400 4X4 IRS

User Rating ATV.com 45 of 135
2012 Utility


Quality & Reliability
Ride & Comfort
2012 Yamaha Big Bear 400 4X4 IRS
View all Photos & Videos
2012 Yamaha Big Bear 400 4X4 IRS pictures, prices, information, and specifications. Below is the information on the 2012 Yamaha Big Bear 400 4X4 IRS. If you would like to get a quote on a new 2012 Yamaha Big Bear 400 4X4 IRS use our Build Your Own tool, or Compare this ATV to other Utility ATVs.

2012 Yamaha Big Bear 400 4X4 IRS Specifications

Model Type  Utility
BASE MSRP(US)  $6,599.00
Warranty  6
Engine Type  Single-Cylinder
Cylinders  1
Engine Stroke  4-Stroke
Cooling  Air / Oil
Valves  2
Valves Per Cylinder  2
Valve Configuration  SOHC
Bore (mm/in)  83 / 3.27
Stroke (mm/in)  71.5 / 2.82
Displacement (cc/ci)  386 / 23.6
Compression Ratio  8.6:1
Starter  Electric / Pull
Fuel Requirements  Regular
Fuel Type  Gas
Carburetion Brand  Mikuni
Fuel Injector  No
Carburetor  Yes
Number Of Carburetors  1
Carburetor Size (mm)  33
Carburetion Type  Carburetor
Speed Governor  No
Snorkel Air Intake  Standard
Transmission Type  Manual / Automatic Clutch
Number Of Speeds  5
Primary Drive (Front Wheel)  Shaft
Primary Drive (Engine / Transmission)  Belt
Reverse  Yes
Hi / Low Range  No
Wheels & Tires:  
Wheels Composition  Steel
Front Tire Diameter (in)  25
Rear Tire Diameter (in)  25
Chromed  No
Front Tire Width  8
Front Wheel Diameter  12
Rear Tire Width  10
Rear Wheel Diameter  12
Front Tire (Full Spec)  AT25 x 8 - 12 ITP Mud Lite
Rear Tire (Full Spec)  AT25 x 10 - 12 ITP Mud Lite
Front Brake Type  Dual Hydraulic Disc
Rear Brake Type  Sealed Oil Bath
Engine Braking  Standard
Front Suspension Type  Independent Double Wishbone
Front Travel (in/mm)  5.8 / 147.3
Front Adjustable Fork Pre-Load  Yes
Front Adjustable Rebound Damping  No
Front Central Suspension Strut  No
Steering Damper  No
Front Stabilizer Bar  No
Rear Suspension Type  Independent Double Wishbone
Rear Travel (in/mm)  7.6 / 193
Rear Adjustable Shock / Spring Pre-Load  Yes
Rear Adjustable Rebound Damping  No
Number Rear Shock Absorbers  2
Rear Suspension Material  Steel
Rear Stabilizer Bar  No
Air Adjustable  No
Steering Type  Manual
Steering Control  Handlebar
Technical Specifications:  
Length (ft)  6.62
Width (in/mm)  43.9 / 1115.1
Height (in/mm)  46.7 / 1186.2
Wheelbase (in/mm)  48.4 / 1229.4
Turning Radius (ft)  10.5
Ground Clearance (in/mm)  10.5 / 266.7
Length (ft/ft)  6
Length (ft/in)  7
Wet Weight (lbs/kg)  628 / 284.9
Towing Capacity (lbs/kgs)  1102 / 499.9
Fuel Capacity (gal/l)  4 / 15.1
Performance  Standard
Seat Type  One-Piece
Adjustable  No
Seat Material  Vinyl
Seat Location  Driver
Folding  No
Seat Height (in/mm)  35.2 / 894.1
Number Of Seats  1
Frame  Steel
Body Material  Plastic
Floor Board Location  Driver
Hand Grips  Standard
Foot Peg Location  Driver
Brush Guard  Yes
Radiator Guard  No
CV Boot Cover  Yes
Shock Cover  No
Front Fender  Standard
Rear Fender  Standard
Handlebars  Standard
Front Bumper  Standard
A-Arm Skid Plate (Front)  Yes
Bash Plate (Front/Rear)  Yes / Yes
Swing Arm Skid Plate  No
Trip Odometer  Standard
Speedometer  Standard
Temperature Warning Type  Light
Fuel Level Warning Type  Gauge
Warranty (Months/Condition)  6 / Limited
Generic Type (Primary)  Utility
Manufacturer Country  Japan
Manufacturer Recommend Minimum Age  16
NADATrimID  98461
Parent Company  Yamaha
Display Name  Big Bear 400 4X4 IRS
Towing & Hauling:  
Tongue Weight (lbs/kgs)  900 / 408.2
Rear Hitch Type  Standard
Drive Line:  
Driveline Brand  On-Command™
Driveline Type  Selectable 4X2 / 4X4
Number Of Driveline Modes  2
Rear Unlocking Differential  No
Rear Solid Axle  No
Differential Lock Location  Front
Power Outlet  Standard
Underseat Storage  Standard
Capacity (lbs/kgs)  88 / 39.9
Halogen Headlight (s)  Standard
Paint & Finish:  
Metallic  No

2012 Yamaha Big Bear 400 4X4 IRS Photos & Videos

View All Photos and Videos

User Reviews

great 4wheeler!
By Diffy(Owner), Nov. 16, 2013
I have owned a Yamaha Big Bear 400 for the last 15 years. It was an excellent machine, and I loved it. we have 7 four wheelers in our hunting camp, and mine is the only one that has never been stuck. in fact, we use mine to pull out the other four wheelers that get stuck. unfortunately, it was stole... Read Full Review


Quality & Reliability
Ride & Comfort
Did you find this review useful? YES NO
Yamaha big bear
By Frank(Owner), Jun. 5, 2014
I have had a 2012 yamaha big bear for about 2 years know. Great mechine no problems. Read Full Review


Quality & Reliability
Ride & Comfort
Did you find this review useful? YES NO


Featured Vehicles

Find a ATV Dealer near you

Enter your ZIP code below to search for ATV dealers near you.

Email this article to a friend