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Suzuki GSX 400F Katana

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Make Model

Suzuki GSX 400F Katana

Year

1982

Engine

Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.

Capacity

398 cc / 24.3 cu in
Bore x Stroke 53 x 45.2 mm
Compression Ratio 10.2:1
Cooling System Air cooled
Lubrication System Wet sump

Induction

4 x Mikuni BS26SS carburetors

Ignition

Fully transistorised

Starting

Electric

Battery

12V, 12Ah

Spark Plug

NGK D8EA, NIPPON DENSO X24ES-U

Max Power

30.8 kW / 41.3 hp @ 10500 rpm

Max Torque

30.2 Nm / 3.1 kgf-m / 22.3 lb-ft @ 8500 rpm

Clutch

Wet, multiplate

Transmission

6 Speed

Final Drive

Chain, DAIDO DID50UB, 104 links

Primary Reduction

2.300 (92/40)

Final Reduction

2.866 (43/15)

Gear Ratios

1st 3.166 (38/12) / 2nd 2.125 (34/16) / 3rd 1.631 (31/19) / 4th 1.333 (28/21) / 5th 1.173 (27/23) / 6th 1.083 (26/24)

Front Suspension

Telescopic fork, oil dampened

Front Wheel Travel

150 mm / 5.9 in

Rear Suspension

Swingarm, dual shocks, oil dampened, spring 5-way adjustable

Rear Wheel Travel

107 mm / 4.2 in

Front Brakes

2 x Discs

Rear Brakes

Single disc

Front Tyre

3.25-S19 4PR

Rear Tyre

3.75-S18 4PR

Steering Angle

42° (left and right)

Caster

63°

Trail

100 mm / 3.9 in

Dimensions

Length: 2105 mm / 82.9 in
Width:     750 mm / 29.5 in
Height:  1135 mm / 44.7 in

Wheelbase

1415 mm / 55.7 in

Ground Clearance

165 mm / 6.5 in

Seat Height

780 mm / 30.7 in

Turning Radius

2.3 m / 7.5 ft

Dry Weight

179 kg / 395 lbs

Wet Weight

197 kg / 434 lbs

Fuel Capacity 

15 Litres / 4.0 US gal / 3.3 Imp gal

Fuel Reserve

3.5 Litres / 3.7 US qt / 3.1 Imp qt

Oil Capacity

2.0 Litres / 2.1 US qt / 1.8 Imp qt

Top Speed

170 km/h / 106 mph

Standing 0 - 100 km/h

6.3 sec

Suzuki presented a whole new lineup in 1981 with Katana styled bikes where fuel tank, seat, side covers and tail were blended together, in some cases with a cockpit fairing. Initially there were three of them, GSX1100S, GS550M and GS650G. Later came the GSX1000S Katana and the GSX400F, a model with a four-cylinder, 16-valve engine.
The GSX400F (internal code GS400XF) was available for two years. In 1983 the model was replaced with the liquid-cooled GSX400FW.