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Model Type
Off-Road
Model Type
-
MSRP
$7,999
MSRP
-
Warranty
1
Warranty
-
Insurance
Insurance
-
Finance
Finance
-
Generic Type (Primary)
Off-Road
Generic Type (Primary)
Off-Road
Manufacturer Country
Japan
Manufacturer Country
Japan
Introduction Year
2015
Introduction Year
-
Manufacturer Recommend Minimum Age
16
Manufacturer Recommend Minimum Age
16
Parent Company
Yamaha
Parent Company
Yamaha
Display Name
YZ 250FX
Display Name
WR 450F
Year
2018
Year
2021
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
Cooling
Liquid
Valves
4
Valves
4
Valves Per Cylinder
4
Valves Per Cylinder
4
Valve Configuration
DOHC
Valve Configuration
DOHC
Bore (mm/in)
77 / 3.03
Bore (mm/in)
97 / 3.82
Stroke (mm/in)
53.6 / 2.11
Stroke (mm/in)
-
Displacement (cc/ci)
249 / 15.2
Displacement (cc/ci)
450 / 27.5
Compression Ratio
13.5:1
Compression Ratio
13.0:1
Starter
Electric
Starter
Electric
Fuel Requirements
Regular
Fuel Requirements
Regular
Fuel Type
Gas
Fuel Type
Gas
Turbocharged
No
Turbocharged
-
Supercharged
No
Supercharged
-
Carburetion Brand
Keihin
Carburetion Brand
Mikuni
Fuel Injector
Yes
Fuel Injector
Yes
Fuel Injector Size (mm)
44
Fuel Injector Size (mm)
44
Carburetor
No
Carburetor
No
Carburetion Type
Fuel Injected
Carburetion Type
Fuel Injected
Engine
-
Engine
Standard
Carburetion
-
Carburetion
Standard
Stroke (in/mm)
-
Stroke (in/mm)
2.39 / 60.8
Transmission Type
Manual
Transmission Type
Manual
Number Of Speeds
6
Number Of Speeds
5
Overdrive
No
Overdrive
No
Primary Drive (Rear Wheel)
Chain
Primary Drive (Rear Wheel)
Chain
Reverse
No
Reverse
No
Transmission
-
Transmission
Standard
Wheels Composition
Aluminum
Wheels Composition
-
Tube / Tubeless
Tubed
Tube / Tubeless
-
Chromed
Yes
Chromed
-
Tire Brand
Dunlop(R)
Tire Brand
-
Front Tire Width
90
Front Tire Width
-
Front Tire Aspect Ratio
90
Front Tire Aspect Ratio
-
Front Wheel Diameter
21
Front Wheel Diameter
-
Rear Tire Width
110
Rear Tire Width
-
Rear Tire Aspect Ratio
100
Rear Tire Aspect Ratio
-
Rear Wheel Diameter
18
Rear Wheel Diameter
-
Front Tire (Full Spec)
Dunlop(R) AT81 90/90 R21
Front Tire (Full Spec)
-
Rear Tire (Full Spec)
Dunlop(R) AT81 110/100 R18
Rear Tire (Full Spec)
-
Front Brake Type
Hydraulic Disc
Front Brake Type
Hydraulic Disc
Front Brake Diameter (in/mm)
10.6 / 270
Front Brake Diameter (in/mm)
10.6 / 270
Rear Brake Type
Hydraulic Disc
Rear Brake Type
Hydraulic Disc
Rear Brake Diameter (in/mm)
9.7 / 245
Rear Brake Diameter (in/mm)
9.6 / 245
Brakes
-
Brakes
Standard
Front Suspension Type
Inverted Fork
Front Suspension Type
Inverted Fork
Front Travel (in/mm)
12.2 / 309.9
Front Travel (in/mm)
12.2 / 309.9
Front Adjustable Fork Pre-Load
Yes
Front Adjustable Fork Pre-Load
Yes
Front Adjustable Rebound Damping
Yes
Front Adjustable Rebound Damping
Yes
Front Central Suspension Strut
No
Front Central Suspension Strut
No
Front Suspension Brand Name
KYB
Front Suspension Brand Name
KYB
Steering Damper
No
Steering Damper
No
Rear Suspension Type
Twin Sided Swing Arm
Rear Suspension Type
Twin Sided Swing Arm
Rear Suspension Size (in/mm)
2 / 50
Rear Suspension Size (in/mm)
-
Rear Travel (in/mm)
12.5 / 317.5
Rear Travel (in/mm)
12.5 / 317.5
Rear Adjustable Shock / Spring Pre-Load
Yes
Rear Adjustable Shock / Spring Pre-Load
Yes
Rear Adjustable Rebound Damping
Yes
Rear Adjustable Rebound Damping
Yes
Number Rear Shock Absorbers
1
Number Rear Shock Absorbers
1
Rear Suspension Brand Name
KYB
Rear Suspension Brand Name
KYB
Rear Suspension Material
Aluminum
Rear Suspension Material
Aluminum
Air Adjustable
No
Air Adjustable
No
Steering Control
Handlebar
Steering Control
Handlebar
Length (ft)
7.1
Length (ft)
-
Width (in/mm)
32.5 / 825.5
Width (in/mm)
-
Height (in/mm)
50.4 / 1280.2
Height (in/mm)
-
Wheelbase (in/mm)
57.7 / 1465.6
Wheelbase (in/mm)
-
Ground Clearance (in/mm)
12.8 / 325.1
Ground Clearance (in/mm)
-
Length (ft/ft)
7
Length (ft/ft)
-
Length (ft/in)
1.2
Length (ft/in)
-
Wet Weight (lbs/kg)
249 / 112.9
Wet Weight (lbs/kg)
-
Fuel Capacity (gal/l)
2 / 7.6
Fuel Capacity (gal/l)
-
Engine Displacement to Weight (cc)
1
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)
38 / 965.2
Seat Height (in/mm)
37.6 / 955
Number Of Seats
1
Number Of Seats
1
Seat Specifications
-
Seat Specifications
Standard
Frame
Aluminum
Frame
Aluminum
Body Material
Plastic
Body Material
Plastic
Hand Grips
Standard
Hand Grips
Standard
Foot Peg Location
Driver
Foot Peg Location
Driver
Adjustable
No
Adjustable
No
Chain Guard
Yes
Chain Guard
Yes
Chassis Protectors
Yes
Chassis Protectors
Yes
Drive Shaft Guard
No
Drive Shaft Guard
No
Engine Case Guard
No
Engine Case Guard
No
Fork Guards
Yes
Fork Guards
Yes
Saddle Bag Guard
No
Saddle Bag Guard
No
Tank Guard
No
Tank Guard
No
Belt Guard
No
Belt Guard
No
Hand Guards
No
Hand Guards
-
Brush Guard
No
Brush Guard
No
Exhaust Guard
No
Exhaust Guard
No
Light Guard
No
Light Guard
No
Fuel Tank Cover
No
Fuel Tank Cover
No
Front Fender
Standard
Front Fender
Standard
Rear Fender
Standard
Rear Fender
Standard
Top Crown
Standard
Top Crown
-
Stand Type
Kick
Stand Type
Kick
Handlebars
Standard
Handlebars
Standard
Handlebar Pads
Standard
Handlebar Pads
Standard
Skid Plate
Standard
Skid Plate
Standard
Construction
-
Construction
Standard
Foot Pegs
-
Foot Pegs
Standard
Exterior Guards
-
Exterior Guards
Standard
Exterior Covers
-
Exterior Covers
Standard
Stand
-
Stand
Standard
Fuel Level Warning Type
Gauge
Fuel Level Warning Type
Light
Service Reminder
Standard
Service Reminder
-
Digital Instrumentation
-
Digital Instrumentation
Standard
Clock
-
Clock
Standard
Speedometer
-
Speedometer
Standard
Trip Odometer
-
Trip Odometer
Standard
Trip Computer
-
Trip Computer
Standard
Lap Timer
-
Lap Timer
Standard
Fuel Level Warning
-
Fuel Level Warning
Standard
Warranty (Months/Condition)
1 / Limited
Warranty (Months/Condition)
1 / Limited
Battery Warranty (Months)
0
Battery Warranty (Months)
-
Price
-
Price
Standard
MSRP
-
MSRP
$9,799
Destination Charge
-
Destination Charge
425
Adjustable Handlebars
Standard
Adjustable Handlebars
Standard
Adjustable Levers
Standard
Adjustable Levers
Standard
Metallic
No
Metallic
-
Dimensions
-
Dimensions
Standard
Weight
-
Weight
Standard
Capacities
-
Capacities
Standard
Performance
-
Performance
Standard
Length (in/mm)
-
Length (in/mm)
85.6 / 2174.2
Width (in/mm)
-
Width (in/mm)
32.5 / 825.5
Height (in/mm)
-
Height (in/mm)
50 / 1270
Wheelbase (in/mm)
-
Wheelbase (in/mm)
58.3 / 1480.8
Ground Clearance (in/mm)
-
Ground Clearance (in/mm)
12.6 / 320
Wet Weight (lbs/kg)
-
Wet Weight (lbs/kg)
262 / 118.8
Fuel Capacity (gal/l)
-
Fuel Capacity (gal/l)
2.2 / 8.3
Engine Displacement to Weight (cc)
-
Engine Displacement to Weight (cc)
1.72
Wheels
-
Wheels
Standard
Chromed
-
Chromed
No
Tube / Tubeless
-
Tube / Tubeless
Tubed
Tires
-
Tires
Standard
Tire Brand
-
Tire Brand
Dunlop®
Front Tire Width
-
Front Tire Width
80
Front Tire Aspect Ratio
-
Front Tire Aspect Ratio
100
Front Wheel Diameter
-
Front Wheel Diameter
21
Rear Tire Width
-
Rear Tire Width
120
Rear Tire Aspect Ratio
-
Rear Tire Aspect Ratio
90
Rear Wheel Diameter
-
Rear Wheel Diameter
18
Front Tire (Full Spec)
-
Front Tire (Full Spec)
Dunlop® 80/100 R21 MX33
Rear Tire (Full Spec)
-
Rear Tire (Full Spec)
Dunlop® 120/90 R18 MX33
Type
-
Type
Halogen
Headlight (s)
-
Headlight (s)
Standard
Halogen Headlight (s)
-
Halogen Headlight (s)
Standard
Paint
-
Paint
Standard
Metallic
-
Metallic
No
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