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Model Type
Utility
Model Type
-
MSRP
$7,999
MSRP
-
Warranty
6
Warranty
-
Insurance
Insurance
-
Generic Type (Primary)
Utility
Generic Type (Primary)
Sport
Manufacturer Country
Japan
Manufacturer Country
Japan
Introduction Year
2009
Introduction Year
-
Manufacturer Recommend Minimum Age
16
Manufacturer Recommend Minimum Age
16
Parent Company
Yamaha
Parent Company
Yamaha
Display Name
Grizzly 550 FI Auto 4x4
Display Name
YFZ 450R
Year
2012
Year
2024
Make
Yamaha
Make
Yamaha
Engine Type
Single-Cylinder
Engine Type
Single-Cylinder
Cylinders
1
Cylinders
1
Engine Stroke
4-Stroke
Engine Stroke
4-Stroke
Cooling
Liquid / Air
Cooling
Liquid
Valves
4
Valves
5
Valves Per Cylinder
4
Valves Per Cylinder
5
Valve Configuration
SOHC
Valve Configuration
DOHC
Bore (mm/in)
92 / 3.63
Bore (mm/in)
95 / 3.74
Stroke (mm/in)
84 / 3.31
Stroke (mm/in)
-
Displacement (cc/ci)
558 / 34.1
Displacement (cc/ci)
449 / 27.4
Compression Ratio
9.3:1
Compression Ratio
11.8:1
Starter
Electric
Starter
Electric
Fuel Requirements
Regular
Fuel Requirements
Regular
Fuel Type
Gas
Fuel Type
Gas
Carburetion Brand
Mikuni
Carburetion Brand
-
Fuel Injector
Yes
Fuel Injector
Yes
Fuel Injector Size (mm)
40
Fuel Injector Size (mm)
42
Carburetor
No
Carburetor
No
Carburetion Type
Fuel Injected
Carburetion Type
Fuel Injected
Speed Governor
No
Speed Governor
-
Engine
-
Engine
Standard
Carburetion
-
Carburetion
Standard
Other Engine
-
Other Engine
Optional
Stroke (in/mm)
-
Stroke (in/mm)
2.5 / 63.4
Transmission Type
Continuously Variable (CVT)
Transmission Type
Manual
Primary Drive (Front Wheel)
Shaft
Primary Drive (Front Wheel)
-
Primary Drive (Engine / Transmission)
Belt
Primary Drive (Engine / Transmission)
-
Reverse
Yes
Reverse
No
Transmission Brand
UltraMatic™
Transmission Brand
-
Hi / Low Range
Yes
Hi / Low Range
No
Transmission
-
Transmission
Standard
Number Of Speeds
-
Number Of Speeds
5
Primary Drive (Rear Wheel)
-
Primary Drive (Rear Wheel)
Chain
Wheels Composition
Steel
Wheels Composition
-
Tube / Tubeless
Tubeless
Tube / Tubeless
-
Front Tire Diameter (in)
25
Front Tire Diameter (in)
-
Rear Tire Diameter (in)
25
Rear Tire Diameter (in)
-
Chromed
No
Chromed
-
Tire Brand
Maxxis®
Tire Brand
-
Front Tire Width
8
Front Tire Width
-
Front Wheel Diameter
12
Front Wheel Diameter
-
Rear Tire Width
10
Rear Tire Width
-
Rear Wheel Diameter
12
Rear Wheel Diameter
-
Front Tire (Full Spec)
Maxis® AT25 x 8 - 12
Front Tire (Full Spec)
-
Rear Tire (Full Spec)
Maxis® AT25 x 10 - 12
Rear Tire (Full Spec)
-
Front Brake Type
Dual Hydraulic Disc
Front Brake Type
Dual Hydraulic Disc
Rear Brake Type
Dual Hydraulic Disc
Rear Brake Type
Hydraulic Disc
Engine Braking
Standard
Engine Braking
-
Brakes
-
Brakes
Standard
Front Brake Diameter (in/mm)
-
Front Brake Diameter (in/mm)
6.3 / 161
Rear Brake Diameter (in/mm)
-
Rear Brake Diameter (in/mm)
7.9 / 200
Front Suspension Type
Independent Double Wishbone
Front Suspension Type
Independent Double Wishbone
Front Travel (in/mm)
7.1 / 180.3
Front Travel (in/mm)
9.8 / 248.9
Front Adjustable Fork Pre-Load
Yes
Front Adjustable Fork Pre-Load
Yes
Front Adjustable Rebound Damping
No
Front Adjustable Rebound Damping
Yes
Front Central Suspension Strut
No
Front Central Suspension Strut
No
Steering Damper
No
Steering Damper
No
Front Stabilizer Bar
No
Front Stabilizer Bar
No
Rear Suspension Type
Independent Double Wishbone
Rear Suspension Type
Swing Arm
Rear Travel (in/mm)
9.5 / 241.3
Rear Travel (in/mm)
11 / 279.4
Rear Adjustable Shock / Spring Pre-Load
Yes
Rear Adjustable Shock / Spring Pre-Load
Yes
Rear Adjustable Rebound Damping
No
Rear Adjustable Rebound Damping
Yes
Number Rear Shock Absorbers
2
Number Rear Shock Absorbers
1
Rear Suspension Material
Steel
Rear Suspension Material
Aluminum
Rear Stabilizer Bar
No
Rear Stabilizer Bar
No
Air Adjustable
No
Air Adjustable
No
Front Suspension Brand Name
-
Front Suspension Brand Name
KYB
Rear Suspension Size (in/mm)
-
Rear Suspension Size (in/mm)
1.8 / 46
Steering Type
Manual
Steering Type
Manual
Steering Control
Handlebar
Steering Control
Handlebar
Length (ft)
6.78
Length (ft)
-
Width (in/mm)
46.5 / 1181.1
Width (in/mm)
-
Height (in/mm)
48.8 / 1239.52
Height (in/mm)
-
Wheelbase (in/mm)
49.2 / 1249.68
Wheelbase (in/mm)
-
Turning Radius (ft)
10.5
Turning Radius (ft)
-
Ground Clearance (in/mm)
11.8 / 299.7
Ground Clearance (in/mm)
-
Length (ft/ft)
6
Length (ft/ft)
-
Length (ft/in)
9.3
Length (ft/in)
-
Wet Weight (lbs/kg)
648 / 293.9
Wet Weight (lbs/kg)
-
Towing Capacity (lbs/kgs)
1322 / 599.7
Towing Capacity (lbs/kgs)
-
Fuel Capacity (gal/l)
5.3 / 20.1
Fuel Capacity (gal/l)
-
Engine Displacement to Weight (cc)
0.93
Engine Displacement to Weight (cc)
-
Seat Type
One-Piece
Seat Type
One-Piece
Adjustable
No
Adjustable
No
Seat Material
Vinyl
Seat Material
Vinyl
Seat Location
Driver
Seat Location
Driver
Folding
No
Folding
No
Seat Height (in/mm)
35.6 / 904.2
Seat Height (in/mm)
31.9 / 810.3
Number Of Seats
1
Number Of Seats
1
Seat Specifications
-
Seat Specifications
Standard
Frame
Steel
Frame
Aluminum / Steel
Body Material
Plastic
Body Material
Plastic
Floor Board Location
Driver
Floor Board Location
-
Hand Grips
Standard
Hand Grips
Standard
Foot Peg Location
Driver
Foot Peg Location
Driver
Adjustable
No
Adjustable
No
Brush Guard
Yes
Brush Guard
No
Radiator Guard
No
Radiator Guard
Yes
CV Boot Cover
Yes
CV Boot Cover
No
Shock Cover
No
Shock Cover
-
Front Fender
Standard
Front Fender
Standard
Rear Fender
Standard
Rear Fender
Standard
Handlebars
Standard
Handlebars
Standard
Front Bumper
Standard
Front Bumper
Standard
Bash Plate (Front/Rear)
Yes / Yes
Bash Plate (Front/Rear)
-
Swing Arm Skid Plate
No
Swing Arm Skid Plate
Yes
Full Length Skid Plate
Yes
Full Length Skid Plate
-
Construction
-
Construction
Standard
Foot Pegs
-
Foot Pegs
Standard
Exterior Guards
-
Exterior Guards
Standard
Hand Guards
-
Hand Guards
No
Light Guard
-
Light Guard
No
Exterior Covers
-
Exterior Covers
Standard
Nerf Bars
-
Nerf Bars
Optional
Rear Bumper
-
Rear Bumper
Standard
Skid Plate
-
Skid Plate
Standard
Other Exterior
-
Other Exterior
Optional
A-Arm Skid Plate (Rear)
-
A-Arm Skid Plate (Rear)
No
Bash Plate (Front)
-
Bash Plate (Front)
Yes
Digital Instrumentation
Standard
Digital Instrumentation
Standard
Clock
Standard
Clock
-
Trip Odometer
Standard
Trip Odometer
-
Speedometer
Standard
Speedometer
-
Hour Meter
Standard
Hour Meter
-
Temperature Warning Type
Light
Temperature Warning Type
Gauge
Fuel Level Warning Type
Gauge
Fuel Level Warning Type
Light
Fuel Level Warning
-
Fuel Level Warning
Standard
Temperature Warning
-
Temperature Warning
Standard
Warranty (Months/Condition)
6 / Limited
Warranty (Months/Condition)
6 / Limited
Battery Warranty (Months)
0
Battery Warranty (Months)
-
Price
-
Price
Standard
MSRP
-
MSRP
$10,599
Destination Charge
-
Destination Charge
460
Rear Hitch
Standard
Rear Hitch
-
Tow Hook
Standard
Tow Hook
-
Driveline Brand
On-Command™
Driveline Brand
-
Driveline Type
Selectable 4X2 / 4X4
Driveline Type
-
Number Of Driveline Modes
2
Number Of Driveline Modes
-
Rear Unlocking Differential
No
Rear Unlocking Differential
-
Rear Solid Axle
No
Rear Solid Axle
-
Limited Slip Differential Location
Front
Limited Slip Differential Location
-
Differential Lock Location
Front
Differential Lock Location
-
Metallic
No
Metallic
-
Underseat Storage
Standard
Underseat Storage
-
Capacity (lbs/kgs)
99 / 44.9
Capacity (lbs/kgs)
-
Fender Storage Location
Front
Fender Storage Location
-
Headlight Mounts
Standard
Headlight Mounts
-
Halogen Headlight (s)
Standard
Halogen Headlight (s)
Standard
Headlight (s)
Standard
Headlight (s)
Standard
Light Type
Halogen
Light Type
-
Type
-
Type
Halogen
Driveline Type
-
Driveline Type
4X2
Number Of Driveline Modes
-
Number Of Driveline Modes
1
Rear Unlocking Differential
-
Rear Unlocking Differential
No
Rear Solid Axle
-
Rear Solid Axle
Yes
Dimensions
-
Dimensions
Standard
Weight
-
Weight
Standard
Capacities
-
Capacities
Standard
Performance
-
Performance
Standard
Length (in/mm)
-
Length (in/mm)
70.7 / 1795.8
Width (in/mm)
-
Width (in/mm)
48.8 / 1239.5
Height (in/mm)
-
Height (in/mm)
41.9 / 1064.3
Wheelbase (in/mm)
-
Wheelbase (in/mm)
50 / 1270
Ground Clearance (in/mm)
-
Ground Clearance (in/mm)
9.3 / 236.2
Wet Weight (lbs/kg)
-
Wet Weight (lbs/kg)
405 / 183.7
Fuel Capacity (gal/l)
-
Fuel Capacity (gal/l)
2.6 / 9.8
Engine Displacement to Weight (cc)
-
Engine Displacement to Weight (cc)
1.11
Wheels
-
Wheels
Standard
Wheels Composition
-
Wheels Composition
Steel
Chromed
-
Chromed
No
Tube / Tubeless
-
Tube / Tubeless
Tubeless
Tires
-
Tires
Standard
Tire Brand
-
Tire Brand
Maxxis®
Front Tire Width
-
Front Tire Width
7
Front Wheel Diameter
-
Front Wheel Diameter
10
Rear Tire Width
-
Rear Tire Width
10
Rear Wheel Diameter
-
Rear Wheel Diameter
9
Front Tire Diameter (in)
-
Front Tire Diameter (in)
21
Rear Tire Diameter (in)
-
Rear Tire Diameter (in)
20
Front Tire (Full Spec)
-
Front Tire (Full Spec)
Maxxis® AT 21 X 7-10
Rear Tire (Full Spec)
-
Rear Tire (Full Spec)
Maxxis® AT 20 X 10-9
Heated Hand Grips
-
Heated Hand Grips
Optional
Adjustable Handlebars
-
Adjustable Handlebars
Standard
Adjustable Levers
-
Adjustable Levers
Standard
Paint
-
Paint
Standard
Metallic
-
Metallic
No
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