Suzuki DR 650RS (1990) vs Suzuki RMX 250S (1993-95) vs Kawasaki ER4n (2011-12) vs BMW R 100GS (1987)

Comparison technical specifications

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Make:	Suzuki	Suzuki	Kawasaki	BMW
Model:	DR 650RS	RMX 250S	ER4n	R 100GS
Years:	1990	1993-95	2011-12	1987
Engine:	Air/oil cooled, four stroke, single cylinder. SOHC, 4 Valve per cylinder.	Two stroke, single cylinder	Four stroke, parallel twin cylinder. DOHC, 4 valves per cylinder.	Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Capacity:	640 cc / 39 cu in	249 cc / 15.2 cu in	399 cc / 24.3 cu-in	980 cc / 59.8 cu in.
Bore x Stroke:	95 x 90.4 mm	67 mm x 70.8 mm	68.4 x 54.3 mm	94 x 70.6 mm
Compression Ratio:	9.7:1	9.9 - 9.2 - 8.1:1	11.0:1	8.5:1
Induction:	40 mm Flat side BST40 Mikuni	Mikuni TM38SS carburetor	Fuel injection: ø34 mm x 2 Keihin	2 x Bing carburetors
Ignition:	Digital	Suzuki PEI	TCBI with digital advance	Electronic ignition, Bosch
Starting:	Kick	Kick	Electric	Electric
Max Power:	32.8 kW / 45 hp @ 6800 rpm (at rear wheel 30.6 kW / 41.1hp @ 6500 rpm )	38 kW / 51 hp @ 9000 rpm	42 hp / 32 kW @ 9500rpm	44 kW / 60 hp @ 6500 rpm
Max Torque:	57 Nm / 5.1 kgf-m / 42.0 lb-ft @ 5000 rpm	46.6 Nm / / 4.75 kgf-m / 34.4 lb-ft @ 7000 rpm	37 Nm / 27 lb-ft @ 7500 rpm	76 Nm / 7.75 kgf-m / 56 ft-lb @ 3750 rpm
Transmission:	5 Speed	5 Speed constant mesh	6 Speed	5 Speed
Front Suspension:	Telescopic fork	Inverted telescopic, pneumatic/coil spring, oil dampened, 21 way compression dampening, 21 way rebound dampening	41 mm telescopic fork	Telescopic fork with hydraulic shock absorber.
Rear Suspension:	Full Floater swingarm, single shock, gas/oil damped	Link-type, spring preload fully adjustable, 18 way compression dampening, 21 way rebound dampening	Offset laydown single-shock with adjustable preload	Paralever adjustable preload, rebound damping compression
Front Brakes:	Single 280mm disc, 2 piston caliper	Single disc	2x 300mm discs 2 piston calipers	Single ∅285mm disc, 2 piston caliper
Rear Brakes:	Single 230mm disc, 2 piston calipers	Single disc	Single 220mm disc	∅200 Drum
Front Tyre:	90/90-21	80/100 - R21 51M	120/70ZR17	90/90-21
Rear Tyre:	120/90-17	110/100 - R18 64M	160/60ZR17	130/80-17
Dimensions:	Length: 2385 mm / 93.9 in Width: 870 mm / 34.3 in Height: 1330 mm / 52.4 in	Length: 2185 mm / 86.0 in Width: 895 mm / 35.2 in Height 1255 mm - 49.4 in	Length 1100 mm / 43.3 in Height 2100 mm / 82.6 in Width 760 mm / 29.9 in	Length 2290 mm / 90.1 in Width 1000 mm / 39.3 in Height 1165 mm / 45.8 in
Wheelbase:	1510 mm / 59.5 in	1485 mm / 58.5 in	1410 mm / 55.5 in	1514 mm / 59.6 in
Seat Height:	890 mm / 34.8 in	955 mm / 37.6 in	785 mm / 30.9 in	850 mm / 33.5 in
Fuel Capacity:	21 Litres / 5.5 US gal / 4.6 Imp gal	11 L / 2.9 US gal / 2.4 Imp gal	15 Litres / 3.9 USgal	24 L / 6.3 US gal