Kawasaki KX450F: review, history, specs


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Class: motocross

Production: 2006+

Predecessor: Kawasaki KX500 (2-stroke)

Models
Kawasaki KX450F

(KX450-D)

2006-2008

(North America, Europe, Japan, Australia)

Kawasaki KX450F

(KX450-E)

2009-2011

(North America, Europe, Japan, Australia)

Kawasaki KX450F

(KX450-F)

2012-2015

(North America, Europe, Japan, Australia)

Kawasaki KX450F (KX450-D) 2006-2008
Kawasaki KX450F (KX450-E) 2009-2011
Kawasaki KX450F (KX450-E) 2012-2015
Models
Kawasaki KX450F

(KX450-H)

2016-2018

(North America, Europe, Japan, Australia)

Kawasaki KX450

(KX450-J)

2019+

(North America, Europe, Japan, Australia)

Kawasaki KX450F (KX450-H) 2016-2018
Kawasaki KX450 (KX450-J) 2019+

History

History
Year Country Name / Frame / Engine
2006 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450D6F

2007 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450D7F

2008 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450D8F

2009 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450E9F

2010 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450EAF

2011 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450EBF

2012 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450FCF

2013 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450FDF

2014 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450FEF

2015 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450FFF

2016 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450HGF

2017 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450HHF

2018 North America, Europe, Japan, Australia Name: Kawasaki KX450F

Code: KX450HJF

2019 North America, Europe, Japan, Australia Name: Kawasaki KX450

Code: KX450JKF

2020 North America, Europe, Japan, Australia Name: Kawasaki KX450

Code: KX450JLF

Specifications

Kawasaki KX450F: specs.

Specifications
DIMENSIONS Overall length 2185 mm / 86,0 in – KX450D-E, KX450-J

2180 mm / 85,8 in – KX450-F

2195 mm / 86,4 in – KX450-H

Overall width 820 mm / 32,3 in – KX450D-H

830 mm / 32,7 in – KX450-J

Overall height 1280 mm / 50,4 in – KX450D-E

1275 mm / 50,2 in – KX450-F, KX450-J

1290 mm / 50,8 in – KX450-H

Seat height 965 mm / 38,0 in – KX450-D, KX450E9F-EAF

960 mm / 37,8 in – KX450EBF, KX450-H

955 mm / 37,6 in – KX450-F, KX450-J

Wheelbase 1485 mm / 58,5 in – KX450-D, KX450-J

1480 mm / 58,3 in – KX450E-F

1495 mm / 58,9 in – KX450-H

Ground clearance 345 mm / 13,6 in – KX450-D, KX450-H

340 mm / 13,4 in – KX450E9F-EAF, KX450-J

335 mm / 13,2 in – KX450EBF

330 mm / 13,0 in – KX450-F

Dry weight 99,8 kg / 220 lbs – KX450-D
Curb (wet) weight 112,1 kg / 247 lbs – KX450E9F

113,6 kg / 250 lbs – KX450EAF

113,4 kg / 250 lbs – KX450EBF

113,0 kg / 249 lbs – KX450FC

112,5 kg / 248 lbs – KX450FD+

108,7 kg / 240 lbs – KX450-H

110,0 kg / 242 lbs – KX450-J

FRAME Type Tubular, semi double cradle (aluminum)
Front suspension, travel 48 mm inverted telescopic fork KYB (fully adjustable) , 315 mm / 12,4 in – KX450D-F

Inverted telescopic fork Showa SFF-Air (fully adjustable) , 310 mm / 12,2 in – KX450-H

49 mm inverted telescopic fork Showa (fully adjustable) , 305 mm / 12,0 in – KX450-J

Rear suspension, travel Swingarm Uni-Trak with mono-shock (fully adjustable), 315 mm / 12,4 in – KX450D-H

Swingarm Uni-Trak with mono-shock (fully adjustable), 307 mm / 12,1 in – KX450-J

Front tire size 90/100-21 57M – KX450D-E

80/100-21 51M – KX450-F+

Rear tire size 120/80-19 63M
Front brake Single disc, 250 mm, 2-piston caliper – KX450D-F

Single disc, 270 mm, 2-piston caliper – KX450-H+

Rear brake Single disc, 240 mm, 1-piston caliper – KX450D-H

Single disc, 250 mm, 1-piston caliper – KX450-J

Fuel capacity 7,2 l / 1,9 US gal – KX450-D

7,0 l / 1,8 US gal – KX450-E

6,2 l / 1,6 US gal – KX450-F, KX450-J

6,3 l / 1,7 US gal – KX450-H

Trail 117 mm / 4,6 in – KX450-D

116 mm / 4,6 in – KX450-E

113 mm / 4,4 in – KX450-F

125 mm / 4,9 in – KX450-H

122 mm / 4,8 in – KX450-J

Fuel economy
ENGINE Type Water-cooled 4-stroke
Cylinder arrangement Single cylinder
Bore & Stroke 96,0 x 62,1 mm
Displacement 449 cm³ (27,4 cu-in)
Compression ratio 12.0:1 – KX450-D

12.5:1 – KX250E-F, KX450-J

12.8:1 – KX450-H

Valve train Chain driven DOHC, 4 valves
Max. power 52,6 hp (38,7 kW) / 9500 rpm – KX450-J (rear wheel)

Launch Control Mode – KX450-F+

Max. torque 44,5 Nm (4,5 kg*m) / 6700 rpm – KX450-J (rear wheel)
0 to 100 km/h
Top speed
CARBURETION SYSTEM Type Carburetor, 1x Keihin FCR40 – KX450-D

DFI (Digital Fuel Injection), 1x Keihin 43 mm – KX450E-H

Fuel Injection, 1x 44 mm – KX450-J

ID
DRIVE TRAIN Clutch Wet, multi-plate

hydraulic operating – KX450-J+

Transmission 4-speed – KX450D6F

5-speed – KX450D7F+

Final drive Chain
Primary reduction 2.727
Final reduction 3.484
Gear ratio

I

II

III

IV

V


1.800 (KX450D6F); 1.750 (KX450D7F+)

1.411

1.187

1.000

0.875

ELECTRICAL Ignition AC-CDI – KX450-D

DC-CDI – KX450-E+

Alternator
Battery capacity

Images

Kawasaki KX450F: images, gallery.

Kawasaki KX450F
Kawasaki KX450F
Kawasaki KX450F
Kawasaki KX450F

Videos

Kawasaki KX450F: video.

2019 Kawasaki KX450

Manuals

Kawasaki KX450F: manuals, parts, microfiches.