Suzuki GSX400F Katana (1982)

The Suzuki GSX 400F Katana is a 1982 four-stroke motorcycle with a transverse four-cylinder engine. It has 4 valves per cylinder and a capacity of 398 cc. The compression ratio is 10.2:1 and it is air-cooled with a wet sump lubrication system. The motorcycle has 4 x Mikuni BS26SS carburetors and a fully transistorized ignition, with an electric starter and a 12V, 12Ah battery. The maximum power is 30.8 kW / 41.3 hp at 10500 rpm and a maximum torque of 30.2 Nm / 3.1 kgf-m / 22.3 lb-ft at 8500 rpm. The clutch is wet and multiplate and it has a six-speed transmission with chain final drive. The bike has a telescopic fork front suspension and a swingarm dual shocks oil dampened spring 5-way adjustable rear suspension. It has two disc brakes in the front and one disc in the rear, and its front and rear tyres are 3.25-S19 4PR and 3.75-S18 4PR respectively. The motorcycle’s steering angle is 42 degrees (left and right), with a caster of 63 degrees, and trail of 100 mm / 3.9 in. The length is 2105 mm / 82.9 in, the width is 750 mm / 29.5 in, and the height is 1135 mm / 44.7 in. The wheelbase is 1415 mm / 55.7 in, with a ground clearance of 165 mm / 6.5 in, seat height of 780 mm / 30.7 in, and turning radius of 2.3 m / 7.5 ft. The dry weight of the bike is 179 kg / 395 lbs.

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Technical specifications:

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 degrees (left and right)

Caster: 63 degrees

Trail: 100 mm / 3.9 in

Dimensions: Length: 2105 mm / 82.9 inWidth: 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