Kawasaki KX450F: review, history, specs
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) |
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| Models | ||
|---|---|---|
| Kawasaki KX450F
(KX450-H) 2016-2018 (North America, Europe, Japan, Australia) |
Kawasaki KX450
(KX450-J) 2019-2023 (North America, Europe, Japan, Australia) |
Kawasaki KX450
(KX450-M) 2024+ (North America, Europe, Japan, Australia) |
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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 |
| 2021 | North America, Europe, Japan, Australia | Name: Kawasaki KX450
Code: KX450JMFNN |
| 2022 | North America, Europe, Japan, Australia | Name: Kawasaki KX450
Code: KX450JNFNN |
| 2023 | North America, Europe, Japan, Australia | Name: Kawasaki KX450
Code: KX450JPFNN |
| 2024 | North America, Europe, Japan, Australia | Name: Kawasaki KX450
Code: KX450MRFNN |
| 2025 | North America, Japan, Australia | Name: Kawasaki KX450 |
Specifications
Kawasaki KX450F: specs.
| Specifications | ||
|---|---|---|
| DIMENSIONS | Overall length | 2185 mm / 86,0 in – KX450D-E, KX450-J
2180 mm / 85,8 in – KX450-F, KX450-M 2195 mm / 86,4 in – KX450-H |
| Overall width | 820 mm / 32,3 in – KX450D-H, KX450-J (2021-2023), KX450-M
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 1265 mm / 49,8 in – KX450-J (2021-2023) 1290 mm / 50,8 in – KX450-H 1270 mm / 50,0 in – KX450-M | |
| Seat height | 965 mm / 38,0 in – KX450-D, KX450E9F-EAF
960 mm / 37,8 in – KX450EBF, KX450-H, KX450-M 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, KX450-M 1495 mm / 58,9 in – KX450-H | |
| Ground clearance | 345 mm / 13,6 in – KX450-D, KX450-H, KX450-M
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+, KX450-M 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, KX450-M | |
| 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, KX450-M | |
| 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, KX450-M
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, KX450-M 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 115 mm / 4,5 in – KX450-M | |
| Fuel economy / consumption | ||
| ENGINE | Type | Liquid-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, KX450-M 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) | |
| Acceleration 0 to 100 km/h (0-60 mph) | ||
| 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 |
1.411 1.187 1.000 0.875 | |
| ELECTRICAL | Ignition | AC-CDI – KX450-D
DC-CDI – KX450-E+ |
| Alternator | ||
| Battery capacity | ||
Images
Kawasaki KX450F: images, gallery.
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Videos
Kawasaki KX450F: video.
Manuals
Kawasaki KX450F: manuals, parts, microfiches.