Suzuki GS 550 (1977) vs Suzuki SP 370 (1977-79) vs Suzuki GT 380B (1977)
Comparison technical specifications
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| Make: | Suzuki | Suzuki | Suzuki |
| Model: | GS 550 | SP 370 | GT 380B |
| Years: | 1977 | 1977-79 | 1977 |
| Engine: | Four stroke, transverse four cylinders, DOHC, 2 valves per cylinder. | Four stroke, single cylinder, SOHC | Two stroke, transverse three cylinder |
| Capacity: | 549 cc / 33.5 cu in | 369 cc / 22.5 cu in | 371 cc / 22.6 cu in |
| Bore x Stroke: | 56 x 55.8 mm | 85 x 65.2 mm | 54 x 54 mm |
| Compression Ratio: | 8.6:1 | 8.7:1 | 7.2:1 |
| Cooling System: | Air cooled | Air cooled | Air cooled |
| Induction: | 4 x VM22SS Mikuni carburetors | 1 x 32mm Mikuni BS32SS carburetor | 3 x 24mm Mikuni carburetors |
| Ignition: | Battery and Coil | Magneto battery point | Battery and coil |
| Starting: | Electric and kick | Kick | Kick |
| Max Power: | 35.8 kW / 49 hp @ 9000 rpm | 19.3 kW / 26 hp @ 5700 rpm | 27.7 kW / 38 hp @ 7500 rpm |
| Max Torque: | 42 Nm 4.3 kgf-m / 31 lb-ft @ 7500 rpm | 28 Nm / 2.86 kgf-m / 20.7 lb-ft @ 4000 rpm | 38 Nm / 3.9 kgf-m / 28 lb-ft @ 6000 rpm |
| Clutch: | Wet, 15 multi-plate | Wet multiplate | Wet, multiplate |
| Transmission: | 6 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | Telescopic fork, oil damped | Telescopic fork, oil/gas damped | Telescopic fork, oil dampened |
| Rear Suspension: | Twin shocks, coil over, 5-way adjustable springload | Full floater, swingarm, gas shocks | Dual shocks, springs, 5-way adjustable |
| Front Brakes: | Single 275mm disc, 1 piston caliper | 150 mm Drum | Single 275 mm disc |
| Rear Brakes: | Drum | 150 mm Drum | 180mm drum |
| Front Tyre: | 3.25-19 | 3.00 - 21 PR | 3.00-19 4PR |
| Rear Tyre: | 3.75-18 | 4.00 -18 PR | 3.50-18 4PR |
| Fuel Capacity: | 17 Litres / 4.5 US gal / 3.7 Imp gal | 8.5 Litres / 2.2 US gal / 1.9 Imp gal | 15 Litres / 4.0 US gal / 3.3 Imp gal |
| Standing ¼ Mile: | 13.7 sec / 152 km/h / 94.7 mph | 16.9 sec / 114 km/h / 70.8 mph | 13.8 sec |
| Top Speed: | 181 km/h / 112 mph | 140 km/h . 87 mph | 153 km/h / 95 mph |