At the heart of the 2011 Yamaha Grizzly 450 atv motorcycle, Yamaha utilizes a 421 cc (25.7 cu in) liquid-cooled single cylinder, four-stroke layout. Internal engine geometry specifies a bore and stroke of 84.5 x 75.0 mm (3.3 x 3.0 inches) with a 10.0:1 compression ratio.
Rider ergonomics and chassis geometry center around a 840 mm (33.1 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,233 mm (48.5 in) wheelbase engineered for quick, flickable steering geometry. The 15-liter (4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Standover Height
840 mm (33.1 in)
Engine
Displacement421.0 ccm (25.69 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression10.0:1
Bore x Stroke84.5 x 75.0 mm (3.3 x 3.0 inches)
Valves/Cylinder4
Fuel SystemCarburettor. BSR33/1
Fuel ControlSingle Overhead Cams (SOHC)
LubricationWet sump
CoolingLiquid
Transmission
Final DriveShaft drive (cardan) (final drive)
DrivelineOn-Command® 2WD/4WD/diff-lock. Ultramatic® V-belt with all wheel engine braking, H/L/N/R/P.
Chassis
Front SuspensionIndependent double wishbone, 5 position preload adjustment, 160 mm stroke
Rear SuspensionIndependent double wishbone, 5 position preload adjustment, 180 mm stroke
Wheelbase1233 mm (48.5 inches)
Ground Clearance245 mm (9.6 inches)
Wheels & Brakes
Front Tyre25/8-12
Rear Tyre25/10-12
Front BrakesDouble disc
Rear BrakesSealed multidisc
Dimensions & Weight
Seat Height840 mm (33.1 inches) If adjustable, lowest setting.
Overall Height1120 mm (44.1 inches)
Overall Length1993 mm (78.5 inches)
Overall Width1093 mm (43.0 inches)
Fuel Capacity15.00 litres (3.96 US gallons)
Oil Capacity2.60 litres (2.75 US quarts)
Other
StarterElectric
Carrying CapacityFront rack: 40 kg. Rear rack: 80 kg.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
