Gilera RX 250 Amizonas (1985) vs KTM 690 Duke (2009) vs Suzuki GSR 250 (2014-16)

Comparison technical specifications

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Make:	Gilera	KTM	Suzuki
Model:	RX 250 Amizonas	690 Duke	GSR 250
Years:	1985	2009	2014-16
Engine:	Two stroke, single cylinder, reed valve	Four stroke, single cylinder, SOHC, 4 valves	Four stroke, two cylinder, SOHC, 2 valves per cylinder
Capacity:	248.9 cc / 15.2 cu-in	653.7 cc / 39.91 cu in	248 cc / 15.1 cu in
Bore x Stroke:	71 x 62 mm	102 x 80 mm	53.5 x 55.2 mm
Cooling System:	Liquid cooled	Liquid Cooled	Liquid cooled
Compression Ratio:	13.5:1	11.8:1	11.5:1
Induction:	32mm Dell'Orto carburetor	Generation Keihin EMS with EPT (Electric Power Throttle)	Electronic fuel injection
Ignition:	Electronic	Kokusan DC-CDI	Electronic, fully transistorised
Starting:	Kick	Electric	Electric
Max Power:	38 hp / 28.3 kW @ 7500 rpm	46 kW / 65 hp @ 7500 rpm	17.9 kW / 24 hp @ 8500 rpm
Max Torque:	31.3 Nm / 23.1 lb-ft @ 7000 rpm	65 Nm / 6.6 kgf-m / 47.9 ft-lb @ 6550 rpm	22 Nm / 2.3 kgf-m / 16.2 lb-ft @ 6500 rpm
Transmission:	6 Speed	6 Speed	6 Speed
Final Drive:	Chain	Chain X-Ring 5/8 x 5/16"	Chain, constant mesh
Front Suspension:	Telescopic forks	WP Upside-down forks, 4860 ROMA	Telescopic, coil spring, oil damped
Rear Suspension:	Alloy swing arm adjustable single shock	WP monoshock, 4618 with Pro-lever deflector	Swingarm, Mono-shock, coil spring, oil damped
Front Brakes:	Single 240mm disc	Single 320 mm floating disc, radially screwed four-piston brake caliper	Single disc, 290 mm
Rear Brakes:	Drum	Single 240 mm floating disc, single piston caliper	Single disc, 240 mm
Front Tyre:	2.75-21	120/70 - R17	110/80-17
Rear Tyre:	4.60-17	160/60 - R17	140/70-17
Fuel Capacity:	15 Litres / 3.9 US gal	13.5 Litres / 3.6 US gal / 3.0 Imp gal	13 L / 3.4 US gal / 2.9 Imp gal