Kawasaki VN 900 Vulcan Custom (2007-08) vs Yamaha XSR 900 GP (Japan only) (2024) vs KTM 1390 Super Duke GT (2025) vs Kawasaki Z 650 (2017)

Comparison technical specifications

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Make:	Kawasaki	Yamaha	KTM	Kawasaki
Model:	VN 900 Vulcan Custom	XSR 900 GP (Japan only)	1390 Super Duke GT	Z 650
Years:	2007-08	2024	2025	2017
Engine:	Four stroke, V-twin, SOHC, 4 valves per cylinder	Four stroke, transverse triple cylinder, DOHC, 4 valves per cylinder	Four stroke, 75? V-twin cylinder, DOHC, 4 valves per cylinder, variable valve system	Four stroke, parallel twin cylinder. DOHC, 4 valves per cylinder.
Capacity:	903 cc / 49 cu-in	889 cc / 54.2 cu-in	1350 cc / 82.3 cu-in	649 cc / 39.65 cu /in
Bore x Stroke:	88.0 x 74.2 mm	78 x 62.1 mm	110 x 71 mm	83 x 60 mm
Cooling System:	Liquid cooled	Liquid cooled	Liquid cooled with water/oil heat exchanger	Liquid cooled
Compression Ratio:	9.5:1	11.5:1	13.2:1	10.8:1
Ignition:	Digital	TCI: Transistor Controlled Ignition	Keihin EMS with RBW and cruise control, double ignition	TCBI with electronic advance
Starting:	Electric	Electric	Electric	Electric
Max Power:	37 kW / 50 hp @ 5700 rpm	117.4 hp / 87.5 kW @ 10000 rpm	140 kW / 187.7 hp @ 10 000 rpm	50.2 kW / 67.3 hp @ 8,500 rpm
Max Torque:	78 Nm / 8.0 kg-fm @ 3700 rpm	93 Nm / 68.6 lb-ft @ 7000 rpm	145 Nm / 106.9 lb-ft @ 8 000 rpm	65.7 Nm / 48.4 lb-ft @ 7000 rpm
Clutch:	Wet multi-disc, manual	Multiplate assist and slipper clutch	PASC (TM) slipper clutch, hydraulically actuated	Wet multi-disc, manual
Transmission:	5 Speed	6 Speed	6-speed	6 Speed
Final Drive:	Belt	O-ring chain	525 X-Ring	Sealed chain
Frame:	Double-cradle, steel	Diamond	Chrome-moly tubular space frame, powder-coated	Semi-double cradle, high-tensile steel
Front Suspension:	41mm telescopic fork with 7-way preload	41mm inverted fork, adjustable rebound and spring preload	Fully adjustable WP APEX SAT open cartridge forks, with electronic damping adjustment	41 mm hydraulic telescopic fork
Front Wheel Travel:	150 mm / 5.9 in	130 mm / 5.1 in	125 mm / 4.9 in	125 mm / 4.9 in
Rear Suspension:	Uni-Trak with 7-way adjustable preload	Single shock absorber, link type suspension, swingarm	WP APEX PRO Monoshock. Evo: Semi-active technology (SAT)	Horizontal Back-link with adjustable preload
Rear Wheel Travel:	103 mm / 4.1 in	137 mm / 5.3 in	140 mm / 5.5 in	130 mm / 5.1 in
Front Brakes:	Single 300mm disc	2 x 298mm Hydraulic discs 4 piston caliper	2 x 320 mm Brembo Stylema Monobloc four piston, radially mounted caliper	2x 300mm discs 2 piston calipers
Rear Brakes:	Single 270mm disc	Single 245mm Hydraulic disc 2 piston caliper	Single 240 mm disc Brembo twin-piston fixed caliper	Single 220mm disc
Front Tyre:	80/90 -21	120/70 ZR17M/C (58W) Tubeless	120/70 Michelin Power 6	120/70 -17
Rear Tyre:	180/70 -15	180/55ZR17M/C (73W) Tubeless	200/55 Michelin Power 6	160/50 -17
Dimensions:	Length 2405 mm / 94.7 ub Width 894 mm / 35.2 in Heigh 1120 mm / 44.1 in	Length 2155 mm / 84.8 in Width 860 mm / 33.8 in Height 1155 mm / 45.5 in	Length: 2139 mm / 84.2 in Width: 929 mm / 36.6 in Height: 1299 mm / 51.1 in (1399 mm / 55.1 in with screen raised)890	Length 2055 mm / 80.9 in. Width 779 mm / 30.6 in Height 1080 mm / 42.5 in
Wheelbase:	1646 mm / 64.8 in	1495 mm / 58.8 in	1491 mm / 58.7 in	1410 mm / 55.5 in.
Seat Height:	685 mm / 27.0 in	810 mm / 31.9 in	834 mm / 32.8 in	790 mm / 31.1 in
Wet-Weight:	277 kg / 610.8 lbs	193 kg / 425.4 lbs	228 kg / 502 lbs	187 kg / 412 lbs lbs
Fuel Capacity:	20 Litres / 5.3 US gal	14 Litres / 3.7 US gal	19.5 Litres / 4.6 US gal	15 Litres / 4.0 US gal