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Yamaha Motorsports

Yamaha Grizzly 450 Auto 4x4 IRS Updates for 2009
Mid-Sized ATV Gets New Features; Grizzly 700-Inspired Front-End Styling

Grizzly 450 4x4 IRS Black
Grizzly 450 4x4 IRS Black

Grizzly 450 4x4 IRS Blue
Grizzly 450 4x4 IRS Blue

Grizzly 450 4x4 IRS Camo
Grizzly 450 4x4 IRS Camo

Grizzly 450 4x4 IRS Green
Grizzly 450 4x4 IRS Green

CYPRESS, Calif. – June 6, 2008 – Yamaha Motor Corp., U.S.A., which builds the toughest, most off-road capable ATVs, has given the popular Grizzly 450 Auto 4x4 IRS a new front end with Grizzly 700 styling and other added features.  The new 450, which received a high-tech sealed wet break and 2-inch receiver hitch last year, in 2009 also gets a new waterproof storage compartment on the front fender, a relocated water-resistant DC outlet and a new plush seat with thicker, softer foam.

The Grizzly 450 – popular with hunting, farming and recreational riders alike – features Yamaha’s patented On-Command® 4WD system enabling the rider to match machine to terrain by selecting between 2WD, 4WD or 4WD with differential lock from a convenient pushbutton on the handlebar.  It also includes a fully independent suspension system featuring 6.3 inches of travel up front and 7.1 inches out back.  The system is adjustable at both ends, offering a multitude of settings, and is coupled with approximately 11 inches of overall ground clearance providing access to a wide variety of terrain.  The fully-sealed rear wet brake is low maintenance and is great in wet conditions, and coupled with dual hydraulic discs up front, they help provide overall strong and consistent stopping power.

The Grizzly 450’s new seat design, full-sized floorboards and oversized fenders offer up a comfortable ride perfect for a long day in the saddle.  Steel racks featuring a Duragrip finish boast 264 pounds total carrying capacity (88 pounds in front; 176 pounds in rear) and can accommodate plenty of gear.  The vehicle’s towing capacity of more than 1,322 pounds and the new 2-inch receiver hitch combine power with convenience to help with those tough jobs.

The Grizzly 450 4x4 is powered by a 421cc SOHC four-stroke engine.  The powerplant provides plenty of torque-filled punch down low as part of an extremely user-friendly powerband that is well-suited to any activity, be it work- or recreation-related.  The ATV breathes life from a 33mm BSR carburetor, and a durable stainless steel exhaust enhances power delivery while keeping engine noise to a minimum.

Like the top-of-the-line Grizzly 700, the Grizzly 450 carries Yamaha’s exclusive and ultra-tough Ultramatic® automatic transmission system.  Utilizing both centrifugal and sprag (one-way) clutches, the system keeps constant tension on the drive belt for minimal slippage and wear.  Thanks to industry-leading all-wheel engine braking, downhill situations can be met with confidence.  High- and low-range gear options are selected by maneuvering a lever located on the left front fender that also includes reverse, neutral and park options.

The 450 also includes a handy multi-function LCD display illuminating a speedometer, odometer/trip meter, hour meter and clock, as well as gear selection.

The 2009 Grizzly 450 Automatic 4x4 comes in Hunter Green, Steel Blue and Black Metallic with an MSRP of $6,499 and will be available starting in July 2008.  A camo version in Realtree™ AP HD® will be available in August (MSRP $6,849).


2009 Grizzly 450 Automatic 4X4

  • Engine Type – 421cc, 4-Stroke Single, Liquid Cooled w/ Fan, SOHC
  • Bore x Stroke – 84.5mm x 75mm
  • Compression Ratio –10:1
  • Carburetion – Mikuni 33mm BSR
  • Ignition – DC – CDI
  • Starting System – Electric w/ Auxiliary Pull
  • Transmission – Yamaha Ultramatic V-Belt / H,L,N,R,P
  • Engine Braking – All Wheel
  • Drive Train – Yamaha On-Command push button 3-way locking differential, 2WD, 4WD, locked 4WD; Shaft
  • Suspension/ Front – Independent Double Wishbone, 6.3” w/ 5-way Preload Adjustment.
  • Suspension/ Rear – Independent Double Wishbone, 7.1” w/ 5-way Preload Adjustment.
  • Brakes/ Front – Dual Hydraulic Disc
  • Brake/ Rear – Sealed Oil Bathed, Multi Disc
  • Tires/ Front – AT25x8-12
  • Tires/ Rear – AT25x10-12
  • LxWxH – 78.5”x43.0”x44.1”
  • Seat Height – 33.5”
  • Wheel Base – 48.5”
  • Turning Radius – 118”
  • Ground Clearance – 10.8”
  • Fuel Capacity – 4.0 Gallons
  • Dry Weight –590 Lbs
  • Rack Capacity – 88 Lbs.Fr. / 176 Lbs. Rr.
  • Towing Capacity – 1,322 Lbs.
  • Instrumentation – Digital LCD Multi-function display. Speedo, Odo, Dual Trip, Hour, Clock, Gear Position, & Fuel Gauge
  • Lighting – Dual 30W Krypton Multi-reflector Headlights & 21/5W Brake light

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