Kawasaki GPX 750R (1990) vs Ducati 250 Mach 1 (1964-66) vs Suzuki DR-Z4SM (2025) vs Velocette U (1928) vs Velocette LE MK1 (1948-50) vs Yamaha YZF-R 15 V3.0 ABS (2020) vs Kawasaki KLR 650 (1989-90) vs Harley-Davidson Harley Davidson FX 1200 Super Glide (1971-72)

Comparison technical specifications

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Make:	Kawasaki	Ducati	Suzuki	Velocette	Velocette	Yamaha	Kawasaki	Harley-Davidson
Model:	GPX 750R	250 Mach 1	DR-Z4SM	U	LE MK1	YZF-R 15 V3.0 ABS	KLR 650	Harley Davidson FX 1200 Super Glide
Years:	1990	1964-66	2025	1928	1948-50	2020	1989-90	1971-72
Engine:	Four stroke, transverse four cylinders, DOHC, 4 valve per cylinder	Four stroke, single cylinder, Desmo SOHC, bevel gear-drive	Four stroke, single cylinder, DOHC, 4 valve	Two stroke, single cylinder	Four stroke, flat twin cylinder	Four stroke, single cylinder, SOHC, 4 valve with variable valve actuation	Four stroke, single cylinder, DOHC, 4 valve	Four stroke, 45° V-Twin, OHV, 2 valves per cylinder
Capacity:	742 cc / 45.6 cu-in	248.6 cc / 15.2 cu in	398 cc / 24.3 cu-in	249 cc / 15.2 cub in.	149 cc / 9.1 cub in	155.1 cc / 9.14 cu-in	651 cc / 39.7 cu-in	1207 cc / 73.6 cu-in
Bore x Stroke:	68 x 51.5 mm	74 x 57.8 mm	90 x 62.6 mm.	63 x 80 mm	44 x 49 mm	58.0 × 58.7 mm	100 х 83 mm	87.3 x 100.8 mm
Cooling System:	Liquid cooled	Air cooled	Liquid cooled	Air cooled	Water cooled	Liquid cooled	Liquid cooled	Air cooled
Starting:	Elctric	Kick	Electric	Kick start	Pull handle	Electric	Electric	Electric
Transmission:	6 Speed	5 Speed	5 Speed	3 speed, hand controlled gearbox	3 Speed	6 Speed	5 Speed	4 Speed
Final Drive:	Chain	Chain	Chain, #520	Chain	Shaft	Chain	Chain	Chain
Front Suspension:	38mm Telehydraulic forks electrically activated anti-dive	Hydraulic telescopic fork, Ducati 31.5 mm	Telescopic, 49 mm, oil-damped, 11-way compression damping, adjustable spring preload	Webb forks	Telescopic fork	Up-sidedown Telescopic fork	38mm Air assisted Kayaba forks	Telescopic forks
Rear Suspension:	Unit-track air assisted 4-way rebound damping adjustment.	Swingarm, dual shocks, Marzocchi 295 mm, three-way adjustable	Link-type, fully adjustable spring preload, 26-way compression damping	Spring loaded saddle	Dual coil springs and spring loaded seat	Aluminum swingarm with monoshock	Single Kayaba shock	Swinging fork.
Front Brakes:	2x 270mm discs 4 piston calipers	Drum, 180 mm	Single disc	Drum	5 x 0.75 in diameter offset drum	Single 282mm disc 2 piston caliper	Single 230mm disc	Drum
Rear Brakes:	Single 230mm disc 2 piston caliper	Drum, 160 mm	Single disc	Drum	5 x 0.75 in diameter offset drum	Single 240mm disc 1 piston caliper	Single 204mm disc	Drum