Kawasaki ZX-10 (1989) vs Kawasaki Z 900 (2021) vs Kawasaki Z 400 (2021) vs Kawasaki Z 650 (2021) vs Kawasaki ZX-10R Ninja (2021) vs Kawasaki KLR 650 (1989-90) vs Kawasaki Versys-X 250 (2021) vs Kawasaki Z 900RS Café (2021) vs Kawasaki ZZ-R 600 (1989-90) vs Kawasaki GPX 600R Ninja / ZX 600R (1989-93)

Comparison technical specifications

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Make:	Kawasaki	Kawasaki	Kawasaki	Kawasaki	Kawasaki	Kawasaki	Kawasaki	Kawasaki	Kawasaki	Kawasaki
Model:	ZX-10	Z 900	Z 400	Z 650	ZX-10R Ninja	KLR 650	Versys-X 250	Z 900RS Café	ZZ-R 600	GPX 600R Ninja / ZX 600R
Years:	1989	2021	2021	2021	2021	1989-90	2021	2021	1989-90	1989-93
Engine:	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder	Four stroke, parallel twin, DOHC, 4 valves per cylinder	Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder	Four stroke, single cylinder, DOHC, 4 valve	Four stroke parallel twin, DOHC, 8 valves	Four stroke, transverse four cylinder, DOHC, 4 valve per cylinder	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder	Four stroke, transverse four cylinders, DOHC, 4 valve per cylinder
Capacity:	997 cc / 60.8 cu-in	948 cc / 57.8 cu-in	399 cc / cu-in	649 cc / 39.65 cu-in	998 cc / 60.9 cu-in	651 cc / 39.7 cu-in	249 cc / 15.2 cu-in	948 cc / 57.8 cu-in	599 cc / 42.6 cu-in	598 cc / 36.1 cu-in
Bore x Stroke:	74 x 58 mm	73.4 x 56.0 mm	70 x 51.8 mm	83 x 60 mm	76.0 x 55.0 mm	100 х 83 mm	62.0 x 41.2 mm	73.4 x 56.0 mm	64 x 46.6 mm	60 x 52.4 mm
Cooling System:	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled	Liquid cooled
Compression Ratio:	11.0:1	11.8:1	11.5:1	10.8:1	13.0:1	9.5:1	11.3:1	11.8:1	12.0:1	11.71
Induction:	4x 36mm Keihin CV carburtors	Fuel injection: 36 mm x 4 with sub-throttle	DFI with 32mm throttle bodies	DFI® with Keihin 36mm Keihin throttle bodies	DFI with 47mm Mikuni throttle bodies (4) with oval sub-throttles, two injectors per cylinder	Keihin CVK40 carburetor	28 mm Fuel Injection with dual throttle valves	DFI with 36mm Keihin throttle bodies	4x Keihin CVKD 36 carburetors	4x 32mm Keihin CV carburetors
Starting:	Electric	Electric	Electric	Electric	Electric	Electric	Electric	Electric	Electric	Electric
Max Power:	137 hp / 99.9 kW @ 10000 rpm	92.2 kW / 123.6 hp @ 9500 rpm	33.4 kW / 45 hp @10000 rpm	50.2 kW / 67.3 hp	149.3 kW / 203 hp @ 13200 rpm	41.7 hp @ 7100 rpm	33 hp / 24.6 kW @ 11500rpm	110 hp / 82 kW @ 8500rpm	98 hp / 72.9 kW @ 11.500 rpm	84 hp / 62 kW @ 11000 rpm
Max Torque:	3.6 kgf-m / 103 Nm @ 9000 rpm	98.6 Nm / 72.7 lb-ft @ 7700 rpm	38 Nm / 28.0 lb-ft @ 8,000 rpm	65.7 Nm / 48.5 lb-ft @ 6500 rpm	114.9 Nm / 84.7 lb-ft @ 11400 rpm	5.3 kgf-m / 38.3 lb-ft @ 5500 rpm	21.7 Nm / 16 lb-ft @ 10000rpm	98 Nm / 72.7 lb-ft @ 7700 rpm	64 Nm / 47.2 lb-ft @ 9500 rpm	42 ft-lb / 5.8kgf-m @ 9000 rpm
Transmission:	6 Speed	6 Speed	6 Speed	6 Speed	6-speed	5 Speed	6-Speed	6 Speed	6 Speed	6 Speed
Final Drive:	Chain	Sealed chain	Chain	Sealed chain	Sealed Chain	Chain	Chain, sealed	Sealed chain	Chain	Chain
Front Suspension:	41mm Telescopic forks	41 mm inverted fork with rebound damping and spring preload adjustability	41mm Telescopic fork	41 mm hydraulic telescopic fork	43mm inverted Balance Free Fork, adjustable stepless rebound and compression damping, spring preload adjustability, and top-out springs	38mm Air assisted Kayaba forks	41 mm Telescopic fork	41mm inverted fork with compression and rebound damping and spring preload adjustability	41mm hydraulic fork with preload and 4-way rebound damping adjustment	38mm Telescopic with electronic anti-drive.
Rear Suspension:	Uni-trek monoshock,. air assisted 4-way rebound damping adjustment	Horizontal Back-link with rebound damping and spring preload adjustability	Bottom-Link Uni-Trak, gas-charged shock with adjustable preload	Horizontal Back-link with adjustable preload swingarm	Horizontal back-link with Balance Free gas-charged shock, stepless, dual-range (low-/high-speed) compression damping, stepless rebound damping, fully adjustable spring preload	Single Kayaba shock	Bottom-Link Uni-Trak, gas-charged shock and adjustable preload	Horizontal Back-link, gas-charged shock with rebound and preload adjustability	UNI-TRAC with threaded preload adjustment and 3-way rebound damping	Rising rate monoshock with adjustable preload and rebounding preload.
Front Brakes:	2x 300mm discs 2 piston calipers	2x 300 mm semi-floating discs, dual opposed 4 piston calipers	Single 310mm semi-floating petal discs. Caliper: Single balanced actuation dual piston	2x 300mm petal-style discs, 2 piston calipers	2x 330 mm semi-floating Brembo discs, with dual radial mounted Brembo M50 monobloc 4-piston calipers, Intelligent Braking (KIBS) (ABS only)	Single 230mm disc	Single 290 mm petal disc, single caliper balanced actuation dual piston	2x 300 mm semi-floating discs, dual opposed 4 piston calipers	2x 300mm discs 4 piston calipers	2x 270mm discs
Rear Brakes:	Single 250mm disc 2 piston caliper	Single 250mm petal disc, 1 piston caliper	Single 220 mm petal disc. Caliper: Dual-piston	Single 220mm petal-style disc	Single 220mm disc with aluminum single-piston caliper, KIBS-controlled (ABS only)	Single 204mm disc	Single 220 mm petal disc, 1 piston caliper	Single 250mm petal disc, 1 piston caliper	Single 240mm disc 1 piston caliper	Single 130mm disc
Front Tyre:	120/70-17	120/70ZR17M/C (58W)	110/70-17M/C 54 H	120/70 ZR17	120/70 ZR17	90/90 -21	100/90-19M/C 57S	120/70ZR17M/C (58W)	120/60 ZR1 7	110/80 V16
Rear Tyre:	160/60-18	180/55ZR17M/C (73W)	150/60-17M/C 66 H	160/60 ZR7	190/55 ZR17	130/80-17	130/80-17M/C 65S	180/55ZR17M/C (73W)	160/60 ZR17	130/90 V16
Fuel Capacity:	22 Litres / 5.8 US gal	17 Litres / 4.5 US gal	14 Litres / 3.7 US gal	15 Litres / 4.0 US gal	17 Litres / 4.5 US gal	23 Litres / 6.0 US gal	17 Litres / 4.5 US gal / 3.7 Imp gal	17 Litres / 4.5 US gal	18 Litres / 4.7 US gal	19.5 Litres / 5.1 US gal