Yamaha YZF 600R Thundercat (1999) vs Ducati 900 SS (1981) vs Yamaha GTS1000 / ABS (1997-99) vs Kawasaki VN 900 Vulcan Custom (2009-10) vs Yamaha GX 400 (1977) vs Kawasaki KH 125 (1977) vs Yamaha FJR 1300A (2007) vs Kawasaki Z2 750RS (1973) vs KTM 1090 Adventure R (2018)

Comparison technical specifications

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Make:	Yamaha	Ducati	Yamaha	Kawasaki	Yamaha	Kawasaki	Yamaha	Kawasaki	KTM
Model:	YZF 600R Thundercat	900 SS	GTS1000 / ABS	VN 900 Vulcan Custom	GX 400	KH 125	FJR 1300A	Z2 750RS	1090 Adventure R
Years:	1999	1981	1997-99	2009-10	1977	1977	2007	1973	2018
Engine:	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder	Four stroke, 90°“L”twin cylinder, SOHC, 2 valves per cylinder, bevel gear driven	Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder.	Four stroke, V-twin, SOHC, 4 valves per cylinder	Four stroke, parallel twin	Two stroke, single cylinder,	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Four stroke, transverse four cylinder. DOHC	Four stroke, 75°V-twin cylinder, DOHC, 4 valves per cylinder
Capacity:	599 cc / 36.5 cu-in	864 cc / 52.7 cu in	1002 cc / 61.2 cu-in	903 cc / 49 cu-in	391	124 cc / 7.6 cu-in	1298 cc / 79.2 cu-in	746 cc / 45.5 cu-in	1050 cc / 64.0 cu-in
Bore x Stroke:	62 x 49.6 mm	86 x 74.4 mm	75.5 X 56 mm	88.0 x 74.2 mm	69 х 52.4 mm	56 x 50.6 mm	79 x 66.2 mm	64 х 58 mm	103 x 63 mm
Cooling System:	Liquid cooled	Air cooled	Liquid cooled	Liquid cooled	Air cooled	Air cooled	Liquid cooled	Air cooled	Liquid cooling system, continuous circulation of cooling liquid with water pump
Compression Ratio:	12.0:1	9.4:1	10.8:1	9.5:1	9.2:1	7.0:1	10.8:1	NA	-
Induction:	4 x 36 mm Keihin CV downdraft carburetors	2 x Dell'Orto PHF 32C carburetors	Electronic fuel infection.	2x 34mm ø Fuel injection with dual throttles	Carburetor	Carburetor	Electronic Fuel Injection	4x Mikuni VM 26 SC carburetors	EFI, ride by wire
Starting:	Electric	Electric	Electric	Electric	Kick	Kick	Electric	Electric & kick	Electric
Max Power:	72.9 kW / 100 hp @ 11500 rpm	47.8 kW / 65 hp @ 7500 rpm	102 hp / 74.4 kW @ 9000 rpm	37 kW / 50 hp @ 5700 rpm	37 hp @ 8800 rpm		145 hp / 105.7 kW @ 8500 rpm	69 hp / 51.4 kW @ 9000 rpm	125 hp / 91.2 kW @ 8500 rpm
Front Suspension:	41 mm telescopic fork adjustable preload, compression and rebound damping	Marzocchi telescopic fork	Single sided swingarm variable preload, compression and rebound damping	41mm telescopic fork with 7-way preload	Telescopic forks		48mm upside-down telescopic fork w/adjustable preload, compression and rebound damping	Telescopic forks	48mm WP Suspension Up Side Down
Rear Suspension:	Monoshock adjustable preload, bump and rebound	Marzocchi dual shocks, 3-way adjustable	Monocross variable preload, compression and rebound damping	Uni-Trak with 7-way adjustable preload	Dual shocks		Single shock, link-type, w/adjustable preload and rebound damping	Swing arm dual shocks	WP-PDS Monoshock
Front Brakes:	2x 300 mm Discs, 4 piston calipers	2 x 280 mm Disc, 1 piston caliper	Single 330mm disc 6 piston caliper with ABS	Single 300mm disc	Single disc	Single disc	2x 320mm discs 4 piston calipers	Single disc	2x 320mm discs 4 piston calipers
Rear Brakes:	Single 245mm disc, 2 piston caliper	Single 280 mm disc	Single 282mm disc 2 piston caliper	Single 270mm disc	Single disc	Drum	Single 283mm disc 2 piston caliper	Drum	Single 267mm disc 2 piston caliper
Fuel Capacity:	19 Litres / 5.0 US gal / 4.2 Imp gal	15 L / 4.0 US gal / 3.3 Imp gal	20 Litres / 5.28 gal	20 Litres / 5.3 US gal		11.6 Litres	25 Liters / 6.6 gal	17.7 Litres / 4.6 US gal	23 Litres / 6.08 gal