2010 Yamaha Big Bear 400 4X4 IRS

2010 Yamaha Big Bear 400 4X4 IRS pictures, prices, information, and specifications.
MSRP
$6,299
Type
Utility
Insurance
Compare with the 2024 Yamaha Raptor 700 2024 Yamaha Raptor 700
Model Type
Utility
MSRP
$6,299
Dealers
Warranty
6
Insurance
Generic Type (Primary)
Utility
Manufacturer Country
Japan
Manufacturer Recommend Minimum Age
16
Parent Company
Yamaha
Display Name
Big Bear 400 4X4 IRS
Year
2010
Make
Yamaha
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 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
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)
7.4
Wet Weight (lbs/kg)
628 / 284.9
Towing Capacity (lbs/kgs)
904 / 410.1
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/Rear)
Yes / No
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
Battery Warranty (Months)
0
Winch Mount
Standard
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
Tongue Weight (lbs/kgs)
900 / 408.2
Rear Hitch Type
Standard
Power Outlet
Standard
Underseat Storage
Standard
Capacity (lbs/kgs)
88 / 39.9
Headlight Mounts
Standard
Halogen Headlight (s)
Standard
Headlight (s)
Standard
Light Type
Halogen
Metallic
No
User Reviews
5 reviews
  • The BEST
    By Molly McCarty (I am an Owner) on May 28, 2017

    I got mine second hand with a salvage title. It was totaled and slapped back together at 300 miles. It now has over 4000. Let me just say that I am not easy on my equipment. The Big Bear has withstood my abuse for 7 years now and I have done nothing but change the oil regularly and put gas in it ...

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  • I love it
    By Melvin (I am an Owner) on Feb 16, 2012

    I had my Big Bear Since Mar 2010. it is very Durable, I take it off road and ocassionaly through mud. for leisure the family ride it around the neighborhood and haven't any problem. great ATV.

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  • disappointed
    By Hayden (I am an Owner) on Jan 03, 2011

    I work on a dairy farm and we use one of these and a Honda TRX500FM. When we first got the bike a few things didn't work and a lot of stuff didn't fit properly. I was shocked with the lack of guards and protection. Riding in mud and dirt it just feed mud right onto the engine and your legs, this ...

    Suspension: Comfortable but far to rolly, this bike just rolls around and corners worse than any other bike I have ever ridden, much, much worse. It feels very much like you are driving a boat.

    Engine: Not enough low down power, you have to rev it to get anything out of it. We had a few out leaks in the first few weeks too, turns out the rocker cover wasn't screwed down enough at the factory. Oil would leak down and vaporise on the exhaust, smelt horrible.

    Gearbox: How hard is it to make a good gearbox? I mean seriously. When you change up the gear lever usually sticks up leaving you in a false neutral and the engine revving it's nuts off. 2nd and 3rd gear are almost the same ratio, 5th isn't high enough and the bike is screaming by the time you get to 45km/h (25mph). You have to be going back wards to change out of reverse, it just jams in gear if you're not moving.

    Electrics: Hour meter didn't work when we got it, speedo died after about 2 weeks, lights are insufficient to say the least. Needs a handle bar mounted light.

    Off road ability: it's pretty capable off road, the girls can't steer it in 4WD, let alone with the diff lock on. It's aggressive tyres get it through most stuff.

    Plastics: Well designed and quite strong, other designers should look here for inspiration.

    Problems: It has an appetite for CV boots, they aren't protected by anything. The oil cooler is right out the front, completely unprotected. We had a stick go right through it, the new oil cooler is looking very bashed up now. The coil also died for no apparent reason.

    Verdict: It's done about 2600kms/220 hours now, it's broken down so many times it's not funny, it's crap to ride, it's too low geared. I wouldn't recommend it to anyone, you can do much better for the money. The hondas can do about 15'000kms with out an isuue, we had one that got to 31'000kms. This Yamaha is much worse than those Hondas in every way (apart from the plastics), cost more too.

    Our bikes do about 12'000kms a year, they get treated pretty rough but do get taken care of mechanically. I don't think this Yamaha will make it for a year. It is very obviously designed with cost in mind.

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  • carb crap
    By e (I am an Owner) on Jun 17, 2010

    Look bought this thing in feb. 2010 and since then i have had nothing but problems with the carb. It stops up with the smallest molecules you know the ones that you can't see. it doesn't come with an inline fuel filter which might be the reason the carb messes up every 40 miles. You can't mod it ...

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  • Exceptional machine
    By Zach (I am an Owner) on May 21, 2010

    I recently purchased the yamaha big bear 400 irs. I have been nothing but pleased with its performance. I find it can easily surpass other quads in rough terrain and mud. (Especially with the option of servo activated posi lock 4x4.)The cage is a rough poly-coated steel frame,no plastic BS to break ...

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