The Yamaha Grizzly 450 has made a name for itself as an ATV that features the ideal mix of off-road capability, reliability, and comfort in a rugged, mid-size package. It’s capable of conquering tough terrain and even tougher chores, thanks to a set-up of Yamaha exclusive features, including a fully automatic Ultramatic transmission, on command 2WD/4WD with diff lock, rear sealed wet brake, and more, all in a great handling package.

Just like the Grizzly 500 and 700, the 450 is a versatile middleweight ATV that rides on just about any surface. The design of the ATV may be utilitarian at first look, but it also offers plenty of serviceability, particularly the steel cargo racks that come with a special, extra-durable wrinkle paint finish with a combined cargo capacity of 264. The ATV also has a water-resistant, large-capacity underseat storage box; fully integrated floorboards with serrated foot pegs; large front and rear fenders with inner guards; dual, bright multi-reflector 30-watt Krypton bulb headlights with high and low beams; and a digital instrument panel that boasts a multifunction LCD display with speedometer, odometer, dual tripmeter, hour meter, 4WD status, transmission position, and clock.

Inside the Grizzly 450’s lightweight chassis is a 421cc liquid-cooled, SOHC four-stroke single engine that’s both rugged and powerful. The engine comes with a semi-oval slide 33mm BSR Mikuni carburetor and high-output
DC-CDI ignition capable of delivering fantastic throttle response and engine performance across all rpm. There’s also a large-capacity aluminum radiator that provides maximum cooling efficiency, positioned high in frame for optimal protection, and most importantly, Yamaha’s own Three-position On-Command In/Out 4WD feature that lets you switch between 2WD, limited-slip 4WD, and a fully locked differential 4WD.

Find out more about the Yamaha Grizzly 450 after the jump.

  • 2012 Yamaha Grizzly 450 Auto. 4x4
  • Year:
    2012
  • Make:
  • Model:
  • Engine:
    liquid-cooled, SOHC four-stroke single engine
  • Transmission:
    fully automatic Ultramatic transmission
  • Displacement:
    421 L

Engine

2012 Yamaha Grizzly 450 Auto. 4x4 High Resolution Exterior
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  • 421cc liquid-cooled, SOHC four-stroke single is rugged

and powerful.

  • Semi-oval slide 33mm BSR Mikuni carburetor and high-output

DC-CDI ignition deliver fantastic throttle response and engine
performance at all rpm.

  • Pushbutton electric starting.
  • Stainless steel muffler and header design provides superior

power characteristics, exhaust sound and durability.

  • Left-side–mounted (Hi/Lo/N/R/P) shift lever is easily accessible.
  • Large-capacity aluminum radiator provides maximum cooling

efficiency and is positioned high in frame for optimal protection.

  • Compact engine design features a 45-degree cylinder angle for

maximum ground clearance and lower seat height for quick,
responsive steering and agility.

  • Gear-driven crankshaft balancer and rubber-damper engine

mounts reduce vibration.

  • Specially designed drive system air intake vent helps prevent

overheating and keeps water and mud from entering drive case.

  • Tool-free air filter box for easy access and quick maintenance.

Chassis and Suspension

2012 Yamaha Grizzly 450 Auto. 4x4 High Resolution Exterior
- image 421767
  • Lightweight chassis features outstanding durability with superior

rigidity for class-leading agility and handling.

  • Light steering and a class-leading turning radius combine for

increased comfort and incredible maneuverability—even in 4WD.

  • Fully independent four-wheel suspension features a doublewishbone

suspension front and rear delivering 6.3 inches and 7.1
inches of travel.

  • Using a newly-designed multi-disc system running in gear oil,

the sealed rear wet brake combines strong, consistent stopping
power and greatly reduced maintenance requirements.

  • Large-diameter ventilated hydraulic front disc brakes deliver

tremendous stopping power in a variety of conditions.

  • Direct front shaft drive eliminates U-joint for greater durability

and more efficient power transfer when engaged in 4WD.

  • Heavy-duty composite front carry bar and CV joint guards help

prevent damage to boot covers and won’t dent or rust.

Additional Features

2012 Yamaha Grizzly 450 Auto. 4x4 High Resolution Exterior
- image 421772
  • Grizzly 700-inspired front-end styling boasts convenient

water-resistant storage compartment on the front fender.

  • The water-resistant DC outlet is located to the side of the

multifunction instrument panel for convenient access;
automotive style receptacle handles a wide range of accessories.

  • Steel cargo racks with special, extra-durable wrinkle paint

finish feature a combined cargo capacity of 264 pounds (88 front,
176 rear).

  • Available in Realtree AP camouflage with a water-dipped

process for durability.

  • Large-capacity, 4-gallon fuel tank has a built-in gauge and

easy-to-reach petcock valve.

  • Water-resistant, large-capacity underseat storage box provides

added convenience.

  • Wide, fully integrated floorboards keep rider’s feet dry and

feature serrated footpegs for extra grip in wet conditions.

  • Large front and rear fenders with inner guards offer excellent

mud/splash protection.

  • Easy-access, underseat marine-spec electrical components

ensure maximum protection from the elements.

  • Dual, bright multireflector 30-watt Krypton bulb headlights with

high and low beams; rear brake light.

  • Assembled in Newnan, GA, U.S.A.

Specifications

2012 Yamaha Grizzly 450 Auto. 4x4 High Resolution Exterior
- image 421763
Model YFM45FGBL; YFM45FGBGR; YFM45FGHB
Engine Type 421cc, 4-stroke, liquid-cooled single; SOHC
Bore x Stroke 84.5 x 75.0mm
Compression Ratio 10.0:1
Fuel Delivery Mikuni 33mm BSR
Ignition DC-CDI
Starting System Electric
Transmission Yamaha Ultramatic V-belt with
all-wheel engine braking/H, L, N, R, P
Drive Train Yamaha On-Command pushbutton;
3-way locking differential; 2WD,
4WD, locked 4WD; shaft drive
Suspension/Front Independent double wishbone;
6.3-in travel
Suspension/Rear Independent double wishbone;
7.1-in travel
Brakes/Front Dual hydraulic disc
Brake/Rear Sealed oil bathed, multi disc
Tire/Front AT25 x 8-12
Tire/Rear AT25 x 10-12
L x W x H 78.5 x 43.0 x 44.1 in
Seat Height 33.1 in
Wheelbase 48.5 in
Turning Radius 118 in
Ground Clearance 10.8 in
Fuel Capacity 4.0 gal
Wet Weight 606 lb
Rack Capacity 88 lb Fr./176 lb Rr.
Towing Capacity 1322 lb
Instrumentation Digital LCD multifunction display:
speedometer, odometer, dual tripmeter,
hour meter, clock, gear position and fuel
gauge
Lighting Dual 30W Krypton multireflector
headlights & 21W/5W brakelight
Color Steel Blue; Hunter Green;
Realtree AP Camouflage
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