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Key Features
Grizzly 450 Automatic 4x4 has the same great features as big brothers Grizzly 700 and 550, including four-wheel independent suspension, and it’s powered by a fuel-efficient liquid-cooled engine.
Industry-exclusive, fully automatic Ultramatic® transmission is the most advanced drive system in ATV-ing. An automatic centrifugal clutch maintains constant belt tension for reduced belt wear and class-exclusive all-wheel downhill engine braking in 4WD mode.
Industry-exclusive three-position On-Command® In/Out 4WD feature lets you switch between 2WD, limited-slip 4WD and class-exclusive fully locked differential 4WD—all with the simple push of a button. Override button allows engine to make maximum rpm in full Diff Lock mode.
Class-exclusive fully independent long-travel four-wheel suspension features double-wishbone suspension front and rear with five-way preload-adjustable shocks for maximum control and comfort over rough terrain.
Ground clearance of 10.8 inches and high-impact plastic skidplate improve maneuverability and undercarriage protection.
Trick digital instrument panel boasts a multifunction LCD display with speedometer, odometer, dual tripmeter, hourmeter, 4WD status, transmission position and clock.
New for 2009
New Grizzly 700-inspired front-end styling boasts convenient waterproof storage compartment on the front fender.
The water-resistant DC outlet has been relocated to the side of the multifunction instrument panel for convenient access; automotive-style receptacle handles a wide range of accessories.
Seat is extra plush, more than 3/4-inch thicker with softer foam, resulting in more rider comfort at the same seat height with rider aboard as before.
Engine Features
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 is backed up by auxiliary recoil starter.
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 prevents overheating and keeps water and mud from entering drive case.
Easy-access, tool-free air filter box.
Chassis/Suspension Features
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, respectively, with five-way preload-adjustable shocks to ensure maximum tire contact—and comfort.
The sealed rear wet brake combines strong, consistent stopping power with greatly reduced maintenance requirements.
Large-diameter ventilated hydraulic front disc brakes deliver tremendous stopping power in a variety of conditions.
A multi-disc system running in hydraulic fluid, the sealed rear wet brake combines strong, consistent stopping power with greatly reduced maintenance requirements.
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
Steel cargo racks with special, extra-durable wrinkle paint finish feature a combined cargo capacity of 264 pounds (88 front, 176 rear).
Available in four colors, including Realtree® AP HD® Camouflage for true hunting performance.
2-inch receiver hitch for outstanding towing capability.
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 multi-reflector 30-watt Krypton bulb headlights with high and low beams; rear brake light.
Built in Newnan, GA, USA.
Engine Specifications
Type: 421cc, 4-stroke, liquid-cooled single; SOHC
Bore x Stroke: 84.5mm x 75.0mm
Compression Ratio: 10.0:1
Carburetion: Mikuni® 33mm BSR
Ignition: DC-CDI
Starting System: Electric w/auxiliary pull
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
Chassis Specifications
Suspension/Front: Independent double wishbone; 5-way preload adjustment, 6.3-in travel
Suspension/Rear: Independent double wishbone; 5-way preload adjustment, 7.1-in travel
Brakes/Front: Dual hydraulic discs
Brakes/Rear: Sealed wet brake
Tires/Front: AT25x8-12
Tires/Rear: AT25x10-12
Dimensions
Length: 78.5 x 43.0 x 44.1 in
Seat Height: 33.5 in
Wheelbase: 48.5 in
Turning Radius: 118 in
Ground Clearance: 10.8 in
Fuel Capacity: 4.0 gal
Dry Weight: 590 lb
Rack Capacity: 88 lb Fr./176 lb Rr.
Towing Capacity: 1102 lb w/2-in receiver hitch
Other
Instrumentation: Digital LCD multifunction display: speedometer, odometer, dual tripmeter, hourmeter, clock, gear position
Lighting: Dual 30W Krypton multi-reflector headlights & 21W/5W brakelight
Warranty: 6 Month (Limited Factory Warranty)
Colors: Black Metalic, Hunter Green, Steel Blue, Realtree® AP HD® Camouflage

* Price shown is based on the manufacturer's suggested retail price (MSRP) and is subject to change. MSRP excludes optional accessories, applicable taxes, installation, setup and/or other dealer fees.