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)

Comparison technical specifications

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Make:	Kawasaki	Ducati	Suzuki	Velocette	Velocette
Model:	GPX 750R	250 Mach 1	DR-Z4SM	U	LE MK1
Years:	1990	1964-66	2025	1928	1948-50
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
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
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
Cooling System:	Liquid cooled	Air cooled	Liquid cooled	Air cooled	Water cooled
Starting:	Elctric	Kick	Electric	Kick start	Pull handle
Transmission:	6 Speed	5 Speed	5 Speed	3 speed, hand controlled gearbox	3 Speed
Final Drive:	Chain	Chain	Chain, #520	Chain	Shaft
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
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
Front Brakes:	2x 270mm discs 4 piston calipers	Drum, 180 mm	Single disc	Drum	5 x 0.75 in diameter offset drum
Rear Brakes:	Single 230mm disc 2 piston caliper	Drum, 160 mm	Single disc	Drum	5 x 0.75 in diameter offset drum