Kawasaki VN 900 Vulcan Custom (2007-08) vs Kawasaki GPz 600R Ninja / ZX 600R Ninja (1985-86) vs Kawasaki Z 650 (2017) vs Kawasaki VN 1700 Vulcan Voyager (2017-18) vs Kawasaki VN 650 Vulcan S / ABS (2017-18) vs Kawasaki Ninja 125 (2019)

Comparison technical specifications

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Make:	Kawasaki	Kawasaki	Kawasaki	Kawasaki	Kawasaki	Kawasaki
Model:	VN 900 Vulcan Custom	GPz 600R Ninja / ZX 600R Ninja	Z 650	VN 1700 Vulcan Voyager	VN 650 Vulcan S / ABS	Ninja 125
Years:	2007-08	1985-86	2017	2017-18	2017-18	2019
Engine:	Four stroke, V-twin, SOHC, 4 valves per cylinder	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder	Four stroke, parallel twin cylinder. DOHC, 4 valves per cylinder.	Four stroke, V-twin cylinder, SOHC, 8 valve per cylinder	Four stroke, parallel twin cylinder. DOHC, 4 valves per cylinder.	Four stroke, single cylinder, DOCH, 4 valve
Capacity:	903 cc / 49 cu-in	592 cc / 36.1 cu-in	649 cc / 39.65 cu /in	1700 cc / 103.7 cu in	649 cc / 39.65 cu /in	125 cc / 7.6 cu in
Bore x Stroke:	88.0 x 74.2 mm	60 х 52.4 mm	83 x 60 mm	102 x 104mm	83 x 60 mm	58.0 x 47.2mm
Cooling System:	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Air cooled
Compression Ratio:	9.5:1	11.0:1	10.8:1	9.5:1	10.8:1	11.7:1
Induction:	2x 34mm ø Fuel injection with dual throttles	4x 32mm Keihin CVK carburetors	DFI® with Keihin 36mm Keihin throttle bodies	Digital fuel injection, dual 42mm throttle bodies	Fuel system DFI® with two 38mm throttle bodies, with sub-throttles	Fuel injection (ø28 x 1)
Ignition:	Digital	Digital	TCBI with electronic advance	Digital	TCBI with digital advance	B&C (TCBI, B. P&EL. ADV.)
Starting:	Electric	Electric	Electric	Electric	Electric	Electric
Max Power:	37 kW / 50 hp @ 5700 rpm	75 hp / 54.7 kW @ 10500 rpm	50.2 kW / 67.3 hp @ 8,500 rpm	61 kW / 82 hp @ 5000 rpm	61 hp / 44.5 kW) @ 7500 rpm	11.0 kW / 14.8 hp @ 10,000 rpm
Max Torque:	78 Nm / 8.0 kg-fm @ 3700 rpm	5.1 kgf-m / 36.8 lb-ft @ 9000 rpm	65.7 Nm / 48.4 lb-ft @ 7000 rpm	146 Nm / 107 lb-ft @ 2750 rpm	63 Nm / 46.5 ft.lb @ 6600 rpm	11.7 Nm / 8.6 lb-ft @ 7,700 rpm
Transmission:	5 Speed	6 Speed	6 Speed	6 Speed with overdrive	6 Speed with positive neutral finder	6 Speed, return shift
Final Drive:	Belt	Chain	Sealed chain	Carbon fiber belt	Sealed chain	Chain
Front Suspension:	41mm telescopic fork with 7-way preload	37mm Air assisted forks, AVDS adjustable anti-dive	41 mm hydraulic telescopic fork	43mm hydraulic fork	41 mm hydraulic telescopic fork	37mm Telescopic Fork
Front Wheel Travel:	150 mm / 5.9 in	140 mm / 5.5 in	125 mm / 4.9 in	140 mm / 5.5 in	129 mm / 5.1 in	110mm / 4.3 in
Rear Suspension:	Uni-Trak with 7-way adjustable preload	Single air assisted shock adjustable for rebound damping	Horizontal Back-link with adjustable preload	Swingarm with twin air-assisted shocks, with 4-way rebound damping	Lay-down offset rear shock with linkage and adjustable preload	Uni Track Swingarm
Front Brakes:	Single 300mm disc	2x discs 1 piston calipers	2x 300mm discs 2 piston calipers	2x 300mm discs 2 piston calipers / ABS Optimal	Single 300mm disc 2 piston caliper	Single 290mm Disc, Dual Piston Calipers
Rear Brakes:	Single 270mm disc	Single disc 1 piston caliper	Single 220mm disc	Single 300mm disc 2 piston caliper / ABS Optimal	Single 250mm disc 1 piston caliper	Single 220mm Disc
Front Tyre:	80/90 -21	110/90-16	120/70 -17	130/90R16	120/70 -R18	100/80-17M/C 52S
Rear Tyre:	180/70 -15	130/90-16	160/50 -17	170/70R16	160/60 R17	130/70-17M/C 62S
Fuel Capacity:	20 Litres / 5.3 US gal	18 Litres / 4.7 US gal	15 Litres / 4.0 US gal	20 Litres / 5.3 US gal	14 Litres / 3.7 US gal	11 Litres / 2.9 US gal