Kawasaki AR 50 (1981-96) vs Yamaha YDS-7 (1972) vs Victory Hammer S (2007-08) vs BMW K 75RTA (1994) vs Ducati GT 1000 Classic (2009) vs Ducati 350GTV (1977-81) vs Suzuki GSX 750ES (1985) vs Kawasaki W 650 (2002-04) vs Suzuki RF 400R (1995-96)

Comparison technical specifications

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Make:	Kawasaki	Yamaha	Victory	BMW	Ducati	Ducati	Suzuki	Kawasaki	Suzuki
Model:	AR 50	YDS-7	Hammer S	K 75RTA	GT 1000 Classic	350GTV	GSX 750ES	W 650	RF 400R
Years:	1981-96	1972	2007-08	1994	2009	1977-81	1985	2002-04	1995-96
Engine:	Two stroke, single cylinder, disc valve.	Two stroke, piston-port, parallel twin	Four stroke, 50° V twin SOHC, 4 valves per cylinder	Four-stroke, horizontal three cylinder in-line, liquid cooled, DOHC, 2 valves per cylinder	Four stroke, 90° “L” twin cylinder, desmodromic 2 valves per cylinder, operated by four rocker arms (two opening rockers and 2 closing rockers) SOHC. Driven by the crankshaft through spur gears, timing belt pulleys and toothed timing belts	Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder.	Four stroke, transverse four cylinders, DOHC, 4 valve per cylinder.	Four stroke, parallel twin cylinder, SOHC, 4 valve per cylinder	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.
Capacity:	49 cc / 3.0 cu-in	247 cc / 15.0 cu-in	1634 cc / 100 cu-in	740 cc / 45 cub. in.	992 cc / 60.5 cu in	349.6 cc / 21.3 cu in	747 cc / 45.5 cu-in	676 cc / 41.2 cu-in	398 cc / 24.3 cu in
Bore x Stroke:	49 x 41.6 mm	54 x 54 mm	101 x 102 mm	67 x 70 mm	94 x 71.5 mm	71.8 x 43.2 mm	67 x 53 mm	72 x 83 mm	40.4 x 56 mm
Induction:	Mikuni VM18SC Carburetor	26mm Mikuni	Electronic Fuel Injection with 44mm throttle bodies	Electronic injection, Bosch LE-Jettronic	Marelli electronic fuel injection, 45mm throttle body	2 x 26 mm Dell'Orto VHB 26 FS/FD	4 x Mikuni 32 mm carburetors	2x Keihin CVK34 carburetor	Mikuni 32 mm carburetors
Starting:	Kick	Kick	Electric	Electric	Electric	Electric	Electric	Electric	Electric
Transmission:	6 Speed	5 Speed Helical-gear primary drive. Rear chain % x %in with top guard. Engine rpm at 30 mph in top gear, approximately 2,500.	6 Speed	5 speed	6 Speed	5-Speed	5 Speed	5 Speed	6 Speed
Final Drive:	Chain	Chain	Carbon Fiber Reinforced Belt	Shaft	Chain, gear ration:15/39	Chain	#530 Chain	Chain	Chain
Front Suspension:	Telescopic fork	34mm Telescopic forks	43mm Inverted cartridge telescopic fork	Telescopic fork with hydraulic shock absorber	43 mm Marzocchi upside down fork	35 mm Paioli fork	Telescopic fork, preload adjustable and hydraulic anti-dive.	39 mm telescopic fork	41mm Telescopic forks, preload adjustable.
Rear Suspension:	Swingarm with monoshock	Twin shock	Single, mono-tube gas forged and cast aluminum w/ rising-rate linkage	Monolever swinging arm.	Twin shock absorbers, spring preload	Dual Marzocchi shocks, 3-way adjustable	Full floater, preload and 4-way rebound damping adjustable.	Twin shocks with 5-way spring preload adjustment	Link-type single shock, rebound and preload adjustable.
Front Brakes:	Single 232mm disc	180mm twin leading shoe drum	2x 300mm floating rotor 4 piston caliper	2 x ∅285mm discs, 2 piston calipers	2x 320 mm Semi-floating discs, 4 piston calipers	2 x 256 mm Brembo discs	2 x 275mm Discs, 2 piston calipers	Single 300mm disc 2 piston caliper	2 x Discs, 4 piston caliper
Rear Brakes:	130 drum	180mm single leading shoe	Single 300mm floating rotor 2 piston caliper	Single ∅285mm disc, 1 piston caliper	Single 245 mm disc, 2 piston caliper	Single 257mm Brembo disc	Single 255mm disc, 1 piston caliper	160mm Drum	Single disc, 2 piston caliper
Front Tyre:	2.50–18	300 x 18	130/70 R18	100/90-V18	120/70 ZR17	3.25-18	100/90-16, Bridgestone L303	100/90-19	120/70-17
Rear Tyre:	2.75–18	3.25 x 18	250/40 R18	130/90-V17	180/55 ZR17	3.50-18	120/90-17, Bridgestone G514	130/80-18	160/60-17
Fuel Capacity:	9.8 Litres / 2.1 US gal	11.4 Litres / 3.0 gal	17 Litres / 4.5 US gal	21 L / 5.5 US gal	15 Litres / 4.0 US gal / 3.3 Imp gal	14 L / 3.7 US gal / 3.1 Imp gal	19.5 Litres / 5.1 US gal / 4.3 Imp gal	15 Litres / 3.96 US gal	17 Litres / 4.5 US gal / 3.7 Imp gal