Kawasaki KX450F Specs

2012 - 2013 • 2 variants

The Kawasaki KX450F is a motocross bike produced from 2012 to 2013 across 2 variants. It is powered by a 90 degree v-twin displacing 449.00 cc. Peak torque is 59 Nm.

About the Kawasaki KX450F

Documented here are the full technical specifications for the Kawasaki KX450F, a Cross / motocross motorcycle with a production run from 2006 to 2018. Specification data includes engine type and displacement, maximum power and torque output, transmission details, frame construction, suspension travel front and rear, brake types and rotor dimensions, tyre sizes, and overall weight and dimension figures. Select a year above to view the complete spec sheet for that model year.

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Kawasaki KX450F by Year

2013 Kawasaki KX450F View specs →

2012 Kawasaki KX450F View specs →

Spec Evolution

How key specs changed across production years.

Specification	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018
Ground Clearance (mm)	345 mm	345 mm	345 mm	340 mm ↓	340 mm	335 mm ↓	330 mm ↓	330 mm	330 mm	330 mm	330 mm	335 mm ↑	335 mm
Ground Clearance (in.)	13.6 inches	13.6 inches	13.6 inches	13.4 inches ↓	13.4 inches	13.2 inches ↓	13.0 inches ↓	13.0 inches	13.0 inches	13.0 inches	13.0 inches	13.2 inches ↑	13.2 inches
Fuel Control	DOHC	DOHC	DOHC	DOHC	DOHC	DOHC	DOHC	DOHC	DOHC	Double Overhead Cams/Twin Cam (DOHC)	Double Overhead Cams/Twin Cam (DOHC)	Double Overhead Cams/Twin Cam (DOHC)	Double Overhead Cams/Twin Cam (DOHC)
Engine Type	Single cylinder	Single cylinder	Single cylinder	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke
Brakes - Front Diameter (mm)	250 mm	250 mm	250 mm	250 mm	250 mm	250 mm	250 mm	250 mm	250 mm	250 mm	250 mm	270 mm ↑	270 mm
Brakes - Front Diameter (in.)	9.8 inches	9.8 inches	9.8 inches	9.8 inches	9.8 inches	9.8 inches	9.8 inches	9.8 inches	9.8 inches	9.8 inches	9.8 inches	10.6 inches ↑	10.6 inches
Frame Type	-	-	Aluminum perimeter	-	-	Backbone frame, high-tensile steel	Aluminum perimeter	Double cradle, high-tensile tubular steel	Double cradle, high-tensile tubular steel	Aluminum perimeter	Aluminum perimeter	Perimeter, aluminium	Perimeter, aluminium
Seat Height	965 mm / 38.0 in.	965 mm / 38.0 in.	965 mm / 38.0 in.	965 mm / 38.0 in.	965 mm / 38.0 in.	960 mm / 37.8 in. ↓	955 mm / 37.6 in. ↓	955 mm / 37.6 in.	955 mm / 37.6 in.	955 mm / 37.6 in.	955 mm / 37.6 in.	950 mm / 37.4 in. ↓	950 mm / 37.4 in.
Dry Weight	99.8 kg / 220.0 lbs	99.8 kg / 220.0 lbs	99.8 kg / 220.0 lbs	-	-	-	275 kg / 606.3 lbs	-	-	-	-	-	-
Wheelbase	1,486 mm / 58.5 in.	1,486 mm / 58.5 in.	1,486 mm / 58.5 in.	1,481 mm / 58.3 in.	1,481 mm / 58.3 in.	1,481 mm / 58.3 in.	1,481 mm / 58.3 in.	1,481 mm / 58.3 in.	1,481 mm / 58.3 in.	1,481 mm / 58.3 in.	1,481 mm / 58.3 in.	1,495 mm / 58.9 in. ↑	1,495 mm / 58.9 in.
Brakes - Front	Single disc	Single disc	Single disc	Single disc	Single disc	Single disc	Single disc	Single disc. Petal disc with 2-piston caliper	Single disc. Petal disc with 2-piston caliper	Single disc. Petal disc with 2-piston caliper	Single disc. Petal disc with 2-piston caliper	Single disc. Petal disc with 2-piston caliper	Single disc. Petal disc with 2-piston caliper
Brakes - Rear	Single disc	Single disc	Single disc	Single disc	Single disc	Single disc	Single disc	Single disc. Petal disc with single-piston caliper	Single disc. Petal disc with single-piston caliper	Single disc. Petal disc with single-piston caliper	Single disc. Petal disc with single-piston caliper	Single disc. Petal disc with single-piston caliper	Single disc. Petal disc with single-piston caliper
Fuel Capacity	7.19 litres / 1.90 gallons	7.19 litres / 1.90 gallons	7.19 litres / 1.90 gallons	7.00 litres / 1.85 gallons ↓	7.19 litres / 1.90 gallons ↑	7.19 litres / 1.90 gallons	6.21 litres / 1.64 gallons ↓	6.21 litres / 1.64 gallons	6.21 litres / 1.64 gallons	6.21 litres / 1.64 gallons	6.21 litres / 1.64 gallons	6.21 litres / 1.64 gallons	6.21 litres / 1.64 gallons
Suspension - Front	38mm leading axle, air-adjustable preload / 9.1 in.	48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in. ↑	48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in.	48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in.	48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in.	Uni-Trak linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression damping, 33-position rebound dampening and fully adjustable spring preload / 12.4 in. ↑	48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in. ↓	48mm inverted, Kayaba PSF with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in.	48mm inverted, Kayaba PSF with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in.	48mm inverted, Kayaba PSF with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment	48mm inverted, Kayaba PSF with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment	49 mm inverted Separate Function front Fork Air - Triple Air Chamber (SFF-Air TAC). Compression damping: 22-way. Rebound damping: 20-way ↑	Inverted Showa SFF-Air TAC fork with Triple Air Chamber, DLC coated sliders, 22-position compression and 20-position rebound damping adjustment ↓
Suspension - Rear	Uni-Trak® with Adjustable Preload, 22-Way (Low Speed)/ Stepless (High Speed) Compression Adjustment, 22-Way Rebound Damping Adjustment, Temperature Compensating Rebound Adjustment	UNI-TRAK® linkage system with 22-position low-speed and variable high-speed compression dampening, 22-position rebound dampening and fully adjustable spring preload / 12.4 in.	UNI-TRAK® linkage system with 22-position low-speed and variable high-speed compression dampening, 22-position rebound dampening and fully adjustable spring preload / 12.4 in.	UNI-TRAK linkage system and Kayaba shock with 22-position low-speed and stepless high-speed compression dampening, 22-position rebound dampening and fully adjustable spring preload / 12.4 in.	UNI-TRAK linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression dampening, 22-position rebound dampening and fully adjustable spring preload / 12.4 in. ↑	Uni-Trak linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression dampening, 33-position rebound dampening and fully adjustable spring preload / 12.4 in.	Uni-Trak linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression damping, 22-position rebound damping and fully adjustable spring preload / 12.4 in.	UNI-TRAK linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression dampening, 33-position rebound dampening and fully adjustable spring preload / 12.4 in.	UNI-TRAK linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression dampening, 33-position rebound dampening and fully adjustable spring preload / 12.4 in.	UNI-TRAK linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression dampening, 33-position rebound dampening and fully adjustable spring preload	UNI-TRAK linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression dampening, 33-position rebound dampening and fully adjustable spring preload	Uni-Trak. Compression damping: 19-way (low-speed), 4-turns or more (high-speed). Rebound damping: 22-way. Spring preload: Fully adjustable ↓	Uni-Trak® linkage system and Showa shock, 19-position low-speed and 4-turns high-speed compression damping, 22-position rebound damping and fully adjustable spring preload ↑
Fuel System	Carburettor. Keihin FCR40	Carburettor. Keihin FCR40	Carburettor. Keihin FCR40	Injection. 43mm Keihin Throttle body ↑	Injection. 43mm Keihin Throttle body	Carburettor. 43mm Keihin throttle body	Injection. DFI with 43mm Keihin throttle body	Injection. DFI with 43mm Keihin throttle body	Injection. DFI with 43mm Keihin throttle body	Injection. DFI with 43mm Keihin throttle body	Injection. DFI with 43mm Keihin throttle body	Injection. 43mm Keihin throttle body	Injection. DFI® w/43mm Keihin throttle body ↑
Colours	Kawasaki Lime Green / Black	Lime Green	Lime Green	Lime Green	Lime Green	Lime Green	Lime Green	Lime Green	Lime Green	Lime Green	Lime Green	Lime Green	Lime Green
Clutch	-	-	-	-	-	-	Automatic	-	-	-	-	Wet multi-disc	Wet multi-disc
Final Drive	Chain	Chain	Chain	Chain	-	Chain	Chain	Shaft drive (cardan)	Chain	Chain	Chain	Chain	Chain
Height	-	1,280 mm / 50.4 in.	1,280 mm / 50.4 in.	1,280 mm / 50.4 in.	1,280 mm / 50.4 in.	1,280 mm / 50.4 in.	1,275 mm / 50.2 in.	1,275 mm / 50.2 in.	1,275 mm / 50.2 in.	1,275 mm / 50.2 in.	1,275 mm / 50.2 in.	1,280 mm / 50.4 in.	1,280 mm / 50.4 in.
Length	-	2,184 mm / 86.0 in.	2,184 mm / 86.0 in.	2,184 mm / 86.0 in.	2,184 mm / 86.0 in.	2,184 mm / 86.0 in.	2,179 mm / 85.8 in.	2,179 mm / 85.8 in.	2,179 mm / 85.8 in.	2,179 mm / 85.8 in.	2,179 mm / 85.8 in.	2,195 mm / 86.4 in. ↑	2,195 mm / 86.4 in.
Compression Ratio	12.0:1	12.0:1	12.0:1	12.5:1 ↑	12.5:1	12.5:1	12.5:1	12.5:1	12.5:1	12.5:1	12.5:1	12.8:1 ↑	12.8:1
Wet Weight	-	-	-	112.1 kg / 247.1 lbs	113.6 kg / 250.4 lbs ↑	113.4 kg / 249.9 lbs ↓	113.0 kg / 249.1 lbs ↓	112.5 kg / 248.0 lbs ↓	112.5 kg / 248.0 lbs	112.5 kg / 248.0 lbs	108.7 kg / 239.6 lbs ↓	108.8 kg / 239.9 lbs ↑	108.8 kg / 239.8 lbs
Warranty	-	-	-	-	-	12 Months	6 months ↓	-	-	-	-	-	-
Tyres - Front	90/90-21	90/90-21	90/70-21	90/80-21	90/100-21	90/100-21	25/8-12 ↓	80/100-21 ↑	25/8-12 ↓	80/100-21 ↑	80/100-21	80/100-21	80/100-21
Gearbox	4-speed	5-speed ↑	5-speed	5-speed	5-speed	5-speed	5-speed	5-speed	5-speed	5-speed	5-speed	5-speed	5-speed
Tyres - Rear	120/80-19	120/80-19	120/80-19	120/80-19	120/80-19	120/80-19	25/10-12 ↓	120/80-19 ↑	120/80-19	120/80-19	120/80-19	120/80-19	120/80-19
Primary Drive	-	-	-	-	-	-	Selectable four-wheel drive with Variable Front Differential Control, shaft	2WD / 4WD, shaft	2WD / 4WD, shaft	-	-	-	-
Rake	27.1°	27.1°	27.1°	26.7° ↓	26.7°	26.7°	26.9° ↑	26.9°	26.9°	26.9°	26.9°	26.9°	28.2° ↑
Trail	-	-	-	117 mm / 4.6 in.	-	-	-	-	-	-	-	-	127 mm / 5.0 in.
Wheel Travel - Front	-	-	-	-	-	-	171 mm / 6.7 in.	-	-	315 mm / 12.4 in.	315 mm / 12.4 in.	305 mm / 12.0 in. ↓	305 mm / 12.0 in.
Wheel Travel - Rear	-	-	-	-	-	-	200 mm / 7.9 in.	-	-	315 mm / 12.4 in.	315 mm / 12.4 in.	305 mm / 12.0 in. ↓	305 mm / 12.0 in.
Ignition	Multi-Map Digital CDI with	Multi-map digital CDI with throttle position sensor (K-TRIC)	Multi-map digital CDI with throttle position sensor (K-TRIC)	Digital DC-CDI	Digital DC-CDI	Digital DC-CDI	Digital DC-CDI	Digital DC-CDI	Digital DC-CDI	Digital DC-CDI	Digital DC-CDI	Digital DC-CDI	Digital DC-CDI
Max Torque	-	-	40.00	-	-	-	59.40 Nm (6.1 kgf-m or 43.8 ft.lbs) @ 4500 Revolutions	59.00 Nm (6.0 kgf-m or 43.5 ft.lbs) @ 5250 Revolutions ↓	59.00 Nm (6.0 kgf-m or 43.5 ft.lbs) @ 5250 Revolutions	-	-	-	-
Starter	-	-	-	-	-	Electric	Electric	Electric	Electric	-	-	Kick	Kick

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