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Year
2005
Year
2023
Parent Company
Kawasaki
Parent Company
Kawasaki
Generic Type (Primary)
Off-Road
Generic Type (Primary)
Off-Road
Make
Kawasaki
Make
Kawasaki
Display Name
KX™ 250F
Display Name
KX™ 450
Manufacturer Country
Japan
Manufacturer Country
Japan
Introduction Year
2004
Introduction Year
2006
Photo Gallery
-
Photo Gallery
Standard
Representative Image
-
Representative Image
No
Price
Standard
Price
Standard
MSRP
$5,599
MSRP
$9,599
Warranty (Months)
6
Warranty (Months)
-
Destination Charge
-
Destination Charge
435
Engine
Standard
Engine
Standard
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
Compression Ratio
12.6:1
Compression Ratio
12.5:1
Starter
Kick
Starter
Electric
Fuel Type
Gas
Fuel Type
Gas
Fuel Requirements
Regular
Fuel Requirements
Regular
Carburetion
Standard
Carburetion
Standard
Carburetion Brand
Keihin
Carburetion Brand
Keihin
Fuel Injector
No
Fuel Injector
Yes
Carburetor
Yes
Carburetor
No
Number Of Carburetors
1
Number Of Carburetors
-
Carburetion Type
Carburetor
Carburetion Type
Fuel Injected
Bore (mm/in)
77 / 3.03
Bore (mm/in)
96 / 3.78
Stroke (in/mm)
2.11 / 53.6
Stroke (in/mm)
2.45 / 62.1
Displacement (cc/ci)
249 / 15.2
Displacement (cc/ci)
449 / 27.4
Carburetor Size (mm)
37
Carburetor Size (mm)
-
Speed Governor
-
Speed Governor
No
Fuel Injector Size (mm)
-
Fuel Injector Size (mm)
44
Transmission
Standard
Transmission
Standard
Transmission Type
Manual
Transmission Type
Manual
Number Of Speeds
5
Number Of Speeds
5
Overdrive
No
Overdrive
-
Reverse
No
Reverse
No
Final Drive Ratio
3.69
Final Drive Ratio
-
Primary Drive (Rear Wheel)
Chain
Primary Drive (Rear Wheel)
Chain
Dimensions
Standard
Dimensions
Standard
Weight
Standard
Weight
Standard
Capacities
Standard
Capacities
Standard
Performance
Standard
Performance
Standard
Length (in/mm)
85.4 / 2169.2
Length (in/mm)
86 / 2184.4
Width (in/mm)
33.1 / 840.7
Width (in/mm)
32.3 / 820.4
Height (in/mm)
50 / 1270
Height (in/mm)
49.8 / 1264.9
Wheelbase (in/mm)
58.1 / 1475.7
Wheelbase (in/mm)
58.5 / 1485.9
Ground Clearance (in/mm)
13.4 / 340.4
Ground Clearance (in/mm)
13.4 / 340.4
Dry Weight (lbs/kg)
203.9 / 92.5
Dry Weight (lbs/kg)
232.2 / 105.3
Fuel Capacity (gal/l)
2 / 7.6
Fuel Capacity (gal/l)
1.64 / 6.2
Engine Displacement to Weight (cc)
1.22
Engine Displacement to Weight (cc)
1.93
Wet Weight (lbs/kg)
-
Wet Weight (lbs/kg)
243.3 / 110.4
Construction
Standard
Construction
Standard
Frame
Steel
Frame
Aluminum
Body Material
Plastic
Body Material
Plastic
Foot Pegs
Standard
Foot Pegs
Standard
Foot Peg Location
Driver
Foot Peg Location
Driver
Adjustable
No
Adjustable
Yes
Hand Grips
Standard
Hand Grips
Standard
Handlebars
Standard
Handlebars
Standard
Handlebar Pads
Optional
Handlebar Pads
Standard
Exterior Guards
Standard
Exterior Guards
Standard
Belt Guard
No
Belt Guard
No
Drive Shaft Guard
No
Drive Shaft Guard
No
Engine Case Guard
Yes
Engine Case Guard
Yes
Fork Guards
Yes
Fork Guards
Yes
Light Guard
No
Light Guard
No
Saddle Bag Guard
No
Saddle Bag Guard
No
Exterior Covers
Standard
Exterior Covers
Standard
Side Cover
Yes
Side Cover
Yes
Front Fender
Standard
Front Fender
Standard
Rear Fender
Standard
Rear Fender
Standard
Stand
Standard
Stand
Standard
Stand Type
Kick
Stand Type
Kick
Spoiler
Optional
Spoiler
-
Other Exterior
Optional
Other Exterior
-
Exhaust Guard
-
Exhaust Guard
Yes
Pocket
-
Pocket
No
Skid Plate
-
Skid Plate
Standard
Steering Control
Handlebar
Steering Control
Handlebar
Front Suspension Type
Inverted Fork
Front Suspension Type
Inverted Fork
Front Adjustable Fork Pre-Load
No
Front Adjustable Fork Pre-Load
No
Front Adjustable Rebound Damping
Yes
Front Adjustable Rebound Damping
Yes
Front Central Suspension Strut
No
Front Central Suspension Strut
No
Rear Suspension Brand Name
UNI-TRAK®
Rear Suspension Brand Name
UNI-TRAK®
Rear Suspension Type
Twin Sided Swing Arm
Rear Suspension Type
Twin Sided Swing Arm
Rear Suspension Material
Aluminum
Rear Suspension Material
Aluminum
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
Air Adjustable
No
Air Adjustable
No
Front Suspension Size (in/mm)
1.9 / 48
Front Suspension Size (in/mm)
1.9 / 49
Front Travel (in/mm)
11.8 / 299.7
Front Travel (in/mm)
12 / 304.8
Rear Travel (in/mm)
12.2 / 309.9
Rear Travel (in/mm)
12.1 / 307.3
Front Suspension Brand Name
-
Front Suspension Brand Name
Showa®
Steering Damper
-
Steering Damper
No
Wheels
Standard
Wheels
Standard
Wheels Composition
Aluminum
Wheels Composition
Aluminum
Tube / Tubeless
Tubed
Tube / Tubeless
Tubed
Tires
Standard
Tires
Standard
Front Tire Width
80
Front Tire Width
80
Front Tire Aspect Ratio
100
Front Tire Aspect Ratio
100
Front Wheel Diameter
21
Front Wheel Diameter
21
Rear Tire Width
110
Rear Tire Width
120
Rear Tire Aspect Ratio
90
Rear Tire Aspect Ratio
80
Rear Wheel Diameter
19
Rear Wheel Diameter
19
Front Tire (Full Spec)
80/100 R21 51M
Front Tire (Full Spec)
Dunlop® Geomax MX3SF: 80/100-21 51M
Rear Tire (Full Spec)
110/90 R19 57M
Rear Tire (Full Spec)
Dunlop® Geomax MX3S: 120/80-19 63M
Tire Brand
-
Tire Brand
Dunlop®
Front Tire Speed Rating
-
Front Tire Speed Rating
M
Rear Tire Speed Rating
-
Rear Tire Speed Rating
M
Front Wheel Width (in)
-
Front Wheel Width (in)
1.6
Rear Wheel Width (in)
-
Rear Wheel Width (in)
2.15
Brakes
Standard
Brakes
Standard
Front Brake Type
Disc
Front Brake Type
Disc
Rear Brake Type
Disc
Rear Brake Type
Disc
Front Brake Diameter (in/mm)
9.8 / 250
Front Brake Diameter (in/mm)
10.6 / 270
Rear Brake Diameter (in/mm)
9.5 / 240
Rear Brake Diameter (in/mm)
9.8 / 250
Seat Type
One-Piece
Seat Type
One-Piece
Seat Location
Driver
Seat Location
Driver
Seat Material
Vinyl
Seat Material
Vinyl
Adjustable
No
Adjustable
No
Folding
No
Folding
No
Seat Specifications
Standard
Seat Specifications
Standard
Number Of Seats
1
Number Of Seats
1
Backrest Logo Plate
No
Backrest Logo Plate
No
Seat Height (in/mm)
37.8 / 960.1
Seat Height (in/mm)
37.6 / 955
Lumbar Adjustment
-
Lumbar Adjustment
No
Detachable
-
Detachable
No
Storage Cover
Optional
Storage Cover
-
Camouflage Trim
-
Camouflage Trim
No
Adjustable Levers
Standard
Adjustable Levers
Standard
Adjustable
-
Adjustable
No
Adjustable Handlebars
-
Adjustable Handlebars
Standard
Paint
Standard
Paint
Standard
Metallic
No
Metallic
No
Decal Kit
-
Decal Kit
Standard
Tinted
-
Tinted
No
Height Adjustable
-
Height Adjustable
No
Windshield Lowers
-
Windshield Lowers
No
Satellite
-
Satellite
No
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