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Yamaha Motorsports

2008 Grizzly 350 IRS Auto. 4x4

Full-featured ATV boasting IRS for superb terrainability, all-day comfort, and a sealed rear wet brake.

Grizzly 350 IRS Auto. 4x4 Blue
Grizzly 350 IRS Auto. 4x4 Blue

Grizzly 350 IRS Auto. 4x4 Camo
Grizzly 350 IRS Auto. 4x4 Camo

Grizzly 350 IRS Auto. 4x4 Green
Grizzly 350 IRS Auto. 4x4 Green

Grizzly 350 IRS Auto. 4x4 Red
Grizzly 350 IRS Auto. 4x4 Red

Key Features:

  • This full-featured machine gets new, independent rear suspension for excellent terrainability and all-day comfort—a great value.
  • The power-packed full-featured Grizzly 350 Automatic 4x4 IRS carries a lot of big brother Grizzly advanced ATV technology in an affordable package.
  • Class-exclusive fully automatic Ultramatic® transmission is the most advanced drive system in ATVing, with an automatic centrifugal clutch that maintains constant belt tension for reduced wear, instant response and class-exclusive front/rear-wheel downhill engine braking.
  • Class-exclusive On-Command® 4WD with Diff Lock means switching from 2WD to 4WD is as simple as pushing a handlebar-mounted button.
  • Sealed rear wet brake delivers consistent stopping power in all conditions and is virtually maintenance-free.
  • Light weight and advanced design produce an ATV with light steering and a class-leading turning radius, for excellent maneuverability and nimble handling—even in 4WD.
  • Left-side–mounted F/N/R shift lever.
  • Wide, fully integrated floorboards keep feet dry and serrated footpegs provide extra grip in wet conditions.
  • Class-exclusive large-diameter ventilated hydraulic dual front disc brakes for tremendous stopping power.
  • Grizzly 450-style grab bar provides excellent durability and good looks too.


  • Rugged and reliable 348cc air-/oil-cooled, SOHC four-stroke single produces stump-pulling bottom-end power and loves to rev.
  • Semi-oval slide 33mm Mikuni carburetor and high-output DC-CDI ignition deliver excellent throttle response and engine performance at all RPM.
  • Pushbutton electric starting is backed up by an auxiliary recoil starter.
  • Stainless steel muffler and header design provides superior power characteristics, exhaust sound and unmatched durability.
  • Fully sealed drive case keeps out water and debris to minimize belt slippage, and a no-tools side cover drain makes it a snap to get rid of what little does sneak in.
  • Automatic cam chain tensioner reduces engine maintenance.


  • Lightweight CAD-designed chassis features outstanding durability with superior rigidity for class-leading agility and handling.
  • Fully independent rear suspension provides fantastic terrainability and a smooth ride.
  • High-tech sealed wet brake means consistent, long-lasting braking performance in all kinds of harsh environments.
  • On-Command with Diff Lock puts power to all four wheels for true 4WD.
  • 9.6 inches of ground clearance and high-impact plastic skid plate improve maneuverability and undercarriage protection.
  • Direct front shaft drive eliminates U-joint for greater durability and more efficient power transfer when engaged in 4WD.
  • Low seat height for enhanced handling.

Additional Features:

  • Steel cargo racks with special, extra-durable wrinkle paint finish feature a combined cargo capacity of 264 pounds (88 front, 176 rear).
  • Front grab bar adds style and functionality.
  • Standard, center-mounted trailer hitch can hook up over 1,100 pounds of payload.
  • Large front and rear fenders with inner guards offer excellent mud/splash protection.
  • Water-resistant, large-capacity underseat storage box provides added convenience.
  • Plush, specially designed seat is widely contoured for incomparable rider comfort.
  • Large-capacity, 3.8-gallon fuel tank has an easy-to-reach petcock valve.
  • Rear brake/taillight.
  • Maintenance-free 12-amp-hour battery provides reliable, cold-weather starting power.
  • Easy-access, underseat marine-spec electrical components ensure maximum protection from the elements.
  • Easy-access, from the elements.
  • Dual, bright, multi-reflector 30-watt Krypton bulb headlights with high and low beams.
  • Easy, handlebar-mounted choke lever.
  • Built in Newnan, GA, USA.



  • Type 348cc, 4-stroke, air-/oil-cooled single; SOHC
  • Bore x Stroke 83.0mm x 64.5mm
  • Compression Ratio 9.2:1
  • Carburetion Mikuni 33mm BSR
  • Ignition DC-CDI
  • Starting System Electric w/auxiliary pull
  • Transmission Yamaha Ultramatic® V-belt with all-wheel engine braking/F, N, R
  • Engine Braking All wheel
  • Drive Train Yamaha On-Command® pushbutton; 3-way locking differential; 2WD, 4WD, locked 4WD; shaft drive


  • 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


  • L x W x H 78.5 x 43.1 x 44.1 in
  • Seat Height 32.7 in
  • Wheelbase 48.6 in
  • Turning Radius 134 in
  • Ground Clearance 9.6 in
  • Fuel Capacity 3.8 gal
  • Dry Weight 578 lbs
  • Rack Capacity 88 lb Fr./176 lb Rr.
  • Towing Capacity 1,102 lbs.


  • Instrumentation Speedometer, odometer
  • Lighting Dual 30W Krypton multi-reflector headlights & 21W/5W brakelight

MSRP* $5,599 (Steel Blue) Available from September 2007
$5,599 (Hunter Green) Available from September 2007
$5,599 (Red) Available from September 2007
$5,949 (Realtree® AP HD™ Camouflage) Available from August 2007

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