Suzuki GS 425 (1978) vs Suzuki GSX 250E (1980) vs Suzuki GS 400 (1978) vs Yamaha TT 500 (1976 - 77) vs Suzuki SP 370 (1978) vs Suzuki DR 650RS (1990) vs Suzuki GS 1000E (1978)

Comparison technical specifications

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Make:	Suzuki	Suzuki	Suzuki	Yamaha	Suzuki	Suzuki	Suzuki
Model:	GS 425	GSX 250E	GS 400	TT 500	SP 370	DR 650RS	GS 1000E
Years:	1978	1980	1978	1976 - 77	1978	1990	1978
Engine:	Four stroke, parallel twin cylinder, DOHC, 2 valves per cylinder.	Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder	Four stroke, parallel twin cylinders, DOHC, 2 valve per cylinder.	Four stroke, single cylinder	Four stroke, single cylinder, SOHC	Air/oil cooled, four stroke, single cylinder. SOHC, 4 Valve per cylinder.	Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder
Capacity:	423 cc / 25.8 cu in	249 cc / 15.2 cu in	398 cc / 24.2 cu-in	499 cc / 30.4 cu-in	369 cc / 22.5 cu in	640 cc / 39 cu in	987 cc / 60.92 cubic in
Bore x Stroke:	67 x 60 mm	60 х 44.2 mm	65 x 60 mm	87 х 84 mm	85 x 65.2 mm	95 x 90.4 mm	70 x 64.8 mm
Compression Ratio:	9.1:1	10.5:1	9:1	9.0 :1	8.9:1	9.7:1	9.2:1
Induction:	2 x 34 mm Mikuni carburetors	2 x 30mm Mikuni BS30SS carburetors	2 x Mikuni BS34 carburetors	38mm Mikuni	1 x 32mm Mikuni BS32SS carburetor	40 mm Flat side BST40 Mikuni	4 x 28mm Mikuni VM 28 SS carburetors.
Starting:	Electric and kick	Electric	Electric and kick-start.	Kick	Kick	Kick	Electric
Max Power:	29.8 kW / 40 hp @ 7000 rpm	21.6 kW / 29 hp @ 10000 rpm	25.4 kW / 34 hp / @ 8000 rpm	27 hp / 19.7 kW @ 5900 rpm	18.5 kW / 24.8 hp @ 7500 rpm	32.8 kW / 45 hp @ 6800 rpm (at rear wheel 30.6 kW / 41.1hp @ 6500 rpm )	65.7 kW / 90 hp @ 8200 rpm
Final Drive:	Chain	Chain	Chain	Chain	Chain	Chain	Chain
Front Suspension:	Telescopic fork	Telescopic forks	Telescopic, coil spring, oil damped	Telescopic fork	Telescopic fork, oil/gas damped	Telescopic fork	Telehydraulic forks
Rear Suspension:	Twin shocks, coil spring over	Swinging arm, dual dampers, 5-way spring preload	Swing arm, coil spring (5-way adjustable), oil damped	Swinging arm	Full floater, swingarm	Full Floater swingarm, single shock, gas/oil damped	Swinging arm forks with twin adjustable shock absorbers, coil over.
Front Brakes:	Single disc, 11in	Single 275mm disc	Single 270 mm disc, 1 piston caliper	Drum	150 mm Drum	Single 280mm disc, 2 piston caliper	2 x 295 mm Discs
Rear Brakes:	Drum, 7 in	Drum	160mm Drum	Drum	150 mm Drum	Single 230mm disc, 2 piston calipers	Single 295 mm disc
Front Tyre:	3.00-18	3.60-18	3.00-18	3.00-21	3.00 -21	90/90-21	3.50 V19
Rear Tyre:	3.75-18	4.10-18	3.50-18	4.60-18	4.00 -18	120/90-17	4.50 V17
Dry Weight:	173 kg / 382 lbs	154 kg / 340 lbs	172 kg / 378 lbs	118.8 kg / 262 lbs	123 kg / 271 lbs	155 kg / 342lbs	232 kg / 507 lbs