Gilera Nordwest 350 (1991) vs KTM 640 Duke II (1998-00) vs Honda XL 600LM Limited Edition (1986) vs Honda CB 650SC Nighthawk (1982-83) vs Kawasaki GPz 1100 / ZX1100A-3 (1985) vs Aprilia RS 250 (1994-95)

Comparison technical specifications

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Make:	Gilera	KTM	Honda	Honda	Kawasaki	Aprilia
Model:	Nordwest 350	640 Duke II	XL 600LM Limited Edition	CB 650SC Nighthawk	GPz 1100 / ZX1100A-3	RS 250
Years:	1991	1998-00	1986	1982-83	1985	1994-95
Engine:	Four stroke, single cylinder, DOHC, 4 valves	Four stroke, single Cylinder. SOHC, 4 valves, engine balancer	Four stroke, single cylinder, SOHC, 4 valve per cylinder, RFVC radial valve	Four stroke, transverse four cylinder, SOHC, 2 valves per cylinder.	Four stroke, transverse fourcylinder, DOHC, 2 valve per cylinder.	Two stroke, 90° V twin-cylinder, with laminar suction and exhaust valve. Separate lubrication with variable automatic mixer
Capacity:	348.8 cc /	624.6 cc / 38.1 cu in	589 cc / 35.6 cu-in	626 cc / 38.2 cu-in	1089 cc / 66.4cu-in	249 cc / 15.2 cu in
Bore x Stroke:	80 x 69.4 mm	101 x 78 mm	100 x 75 mm	59.8 x 55 mm	72.5 x 66 mm	56 x 50.6 mm
Compression Ratio:	9.5:1	11.5:1	9.0:1	9.0:1	8.9:1	12.0:1 (+/- 0.7)
Induction:	2x 25mm Dell'Orto carburetor	Mikuni BST 40 carburetor	2 x 28mm piston valve carburetor	4x Keihin 26mm carburetors	Digital fuel injection	2 x Ø34 mm Mikuni 34 SS flat side carburetors
Max Power:	24 kW / 33ho @ 7500 rpm	40.1 kW / 55 hp @ 7000 rpm	33 kW / 45 hp @ 6500 rpm	50 hp / 37 kW @ 8000	120 hp / 87.6 kW @ 8750rpm	52.9 kW / 72.5 hp @ 11900 rpm
Final Drive:	Chain	Chain, O-ring 5/8 x 1/4"	Chain	Chain	Chain	Chain, sealed, jointless, DID 520 V6
Front Suspension:	41mm Telescopic forks,	WP - 4054 Roma Top adjuster, preload, compression and rebound adjustable	39mm Showa air-adjustable leading-axle forks with dual Syntallic bushings	Showa air-spring, 39mm stanchion tube diameter, brake-actuated hydraulic anti-dive	37mm Kayaba hydraulically activatedair drive abutments for air pressure	Ø40 mm Inverted fork with adjustable rebound and compression damping.
Rear Suspension:	"Power Drive" monoshock	Central shock absorber WP IBS with PRO-LEVER linkage to rear- swing-arm with needle bearing	Pro-link with adjustable rebound damping	Dual Showa shocks, 5-way adjustable spring preload, 4-way adjustable rebound damping	Single air assisted shock adjustablefor reload damping	Magnesium alloy swingarm. Monoshock with resevoir, adjustable extension, compression and spring preloading.
Front Brakes:	2x 270mm discs	Single 320 mm disc, 4 piston caliper	Single 240mm disc 2 piston calliper	2x 275mm discs 2 piston calipers	2x 236mm discs 1 pistoncalipers	2 x Ø298 mm discs, 4 piston calipers
Rear Brakes:	Single 240mm disc	Single 220 mm disc, 1 piston caliper	140mm Drum	180mm Drum	Single 236mm disc1caliper	Single Ø220 mm disc, 2 piston caliper
Front Tyre:	120/60-17	120/70 - ZR17 58H	3.00-21	3.50 -19	110/90 V18	120/60-17
Rear Tyre:	160/60 -17	160/60 - ZR17 69H	5.10-17	130/90 -16	130/90 V17	150/60-17