Technical specifications
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| Model: |
GS 550M Katana |
| Years: |
1981 |
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Engine:
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Four stroke, transverse four cylinders, DOHC, 2 valve per cylinder.
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Capacity:
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549 cc / 33.5 cu in
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Bore x Stroke:
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56 x 55.8 mm
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Cooling System:
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Air cooled
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Compression Ratio:
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8.6:1
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Lubrication:
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Wet sump
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Induction:
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4 x 34mm Mikuni carburetors
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Ignition:
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Transistorized
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Ignition Timing:
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15º BTDC below 1500 rpm / 40º BTDC above 2350 rpm
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Spark Plug:
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B8ES NGK, N60R for real performance
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Battery:
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12V 14Ah
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Starting:
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Electric
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Max Power:
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40 kW / 53.7 hp @ 9400 rpm
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Max Torque:
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41 Nm / 4.4 kgf-m / 32lb-ft @ 8200 rpm
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Clutch:
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Multiplate, wet
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Transmission:
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6 Speed
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Final Drive:
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Chain, Daido D.I.D 530 'O' Ring, approx. 100 links
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Primary Reduction:
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1.977:1 (87/44)
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Final Reduction:
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3.400:1 (51/15 - UK) / 3.267:1 (49/15 - US) / 3.333:1 (50/15 - Italy)
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Gear Ratio:
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1st 2.666 / 2nd 1.777 / 3th 1.380 / 4th 1.173 / 5th 1.045 / 5th 0.956:1
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Front Suspension:
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35 mm Air assisted forks, 2-way spring preload adjustable
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Front Wheel Travel:
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145 mm / 5.7 in
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Rear Suspension:
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Dual shocks, adjustable spring preload and rebound damping
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Rear Wheel Travel:
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85 mm / 2.2 in
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Front Brakes:
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2 x 275mm discs, 1 piston calipers
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Rear Brakes:
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Single drum
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Front Tyre:
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3.25-19
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Rear Tyre:
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3.75-18
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Dimensions:
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Length 2100 mm / 82.7 in Width 720 mm / 28.3 in
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Wheelbase:
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1435 mm / 56.5 in
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Seat Height:
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740 mm / 29.1 in
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Ground Clearance:
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160 mm / 6.3 in
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Wet Weight:
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215 kg / 452 lbs
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Fuel Capacity:
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22 Litres / 5.8 US gal / 4.8 Imp gal
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Reserve:
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4.0 Litres / 1.1 US gal / 0.88 Imp gal
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Consumption Average:
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5.7 L/100 km / 17.4 km/l / 41 US mpg / 49.2 Imp mpg
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Top Speed:
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167 km/h / 104 mph
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