Kawasaki KE 125 (1975-76) vs Kawasaki ZX-10 (1989) vs Kawasaki GPz 550 / Z 550GP (1982) vs Kawasaki KRR ZX-150 Ninja (2008-) vs Kawasaki KL 250 (1978-79) vs Kawasaki VN 900 Vulcan Classic LT (2016-17)

Comparison technical specifications

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Make:	Kawasaki	Kawasaki	Kawasaki	Kawasaki	Kawasaki	Kawasaki
Model:	KE 125	ZX-10	GPz 550 / Z 550GP	KRR ZX-150 Ninja	KL 250	VN 900 Vulcan Classic LT
Years:	1975-76	1989	1982	2008-	1978-79	2016-17
Engine:	Two stroke, single cylinder, rotary valves	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Four stroke, transverse four cylinder, DOHC, 2 valve per cylinder.	Two stroke, single cylinder, Crankcase Reed Valve	Four stroke single cylinder. SOHC, 2 Valve	Four stroke V-Twin, SOHC, 4 valve per cylinder
Capacity:	124 cc / 7.6 cu-in	997 cc / 60.8 cu-in	553 cc / 33.7 cu-in	148 cc / 9.0 cu-in	246 cc / 15.0 cu-in	903 cc / 49 cu-in
Bore x Stroke:	56 х 50.6 mm	74 x 58 mm	58 x 52.4 mm	59 x 54.4 mm	70 х 64 mm	88.0 x 74.2 mm
Cooling System:	Air cooled	Liquid cooled	Air cooled	Liquid cooled	Air cooled	Liquid cooled
Compression Ratio:	7.0:1	11.0:1	10.0:1	7.2:1	8.9:1	9.5:1
Induction:	Carburetor	4x 36mm Keihin CV carburtors	4x 22mm Teikei constant vacuum - main jets #94	Mikuni VM28	Carburetor	Fuel injection: ø 34 mm x 2 with dual throttles
Ignition:	Membrane	Electronic	CDI	DC-CDI		Digital
Starting:	Kick	Electric	Electric	Kick	Kick	Electric
Max Power:	13 hp / 9.6 kW @ 7500 rpm	137 hp / 99.9 kW @ 10000 rpm	58 hp / 42.3 Nm @ 9000 rpm	30 hp / 22.1 kW @ 10500 rpm	21 hp / 15.6 kW @ 8500 rpm	37 kW / 50 hp @ 5700 rpm
Max Torque:	1.5 kgf-m / 10.8 lb-ft @ 6000 rpm	3.6 kgf-m / 103 Nm @ 9000 rpm	35.5 lb-ft / 48.1 Nm @ 8000 rpm	21.6 Nm / 2.20 kgf∙m @ 9,000 rpm	2 kgf-m / 14.4 lb-ft @ 6500 rpm	78 Nm / 8.0 kg-fm @ 3700 rpm
Transmission:	6 Speed	6 Speed	6 Speed	6 Speed	5 Speed	5 Speed
Final Drive:	Chain	Chain	#530 O-ring chain	Chain	Chain	Belt
Front Suspension:	Telescopic forks	41mm Telescopic forks	Telescopic forks	Telescopic fork, 110mm wheel travel.	Telescopic forks	41mm telescopic fork with 7-way preload
Rear Suspension:	Dual shocks	Uni-trek monoshock,. air assisted 4-way rebound damping adjustment	Dual shocks, Swinging arm	Uni-Trak	Dual shocks	Uni-Trak with 7-way adjustable preload
Front Brakes:	Drum	2x 300mm discs 2 piston calipers	2X 260mm disc	Single disc	Drum	Single 300mm disc 2 piston caliper
Rear Brakes:	Drum	Single 250mm disc 2 piston caliper	Single 260mm disc	Single disc	Drum	Single 270mm disc 2 piston caliper
Front Tyre:	2.75-21	120/70-17	3.25 H19	90/90-17	3.00-21	130/90 -16
Rear Tyre:	3.50-18	160/60-18	3.75 H18	100/80-17	4.00-17	180/70 -15
Fuel Capacity:	9.5 Litres / 2.5 US gal	22 Litres / 5.8 US gal	15 Litres / 3.9 US gal	11.5 Litres / 3.0 US gal	10 Litres / 2.6 US gal	20 Litres / 5.3 US gal.