The Suzuki GSX-R 400F (GSX-R Type 2) was released in March 1985. The maximum power and torque of the engine remained the same but the power output was improved at the middle-range revs by changing the carburetor settings. A simple fuel meter was added to the model, the remaining amount of fuel was indicated by the right side combination meter when the power switched in off position. Some improvements were made to the electric system.
1985 was the year the famous Suzuki GSX-R 750 was launched and caused a sensation with its appearance, power and light weight. The 750 cc version had even better power/weight ratio than its little brother and was much faster but not that different from the original, Suzuki GSX-R 400. It was fairly unknown in the time in the Western world but the Suzuki GSX-R 750 became instantly known as the sensational new racer replica from Japan. The fact that the Suzuki GSX-R 400 was released a year earlier is still unknown to many motorcycle enthusiasts outside Japan.
Suzuki GSX-R 400 1985 specifications
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Black / Red
Dimensions and dry mass
Type (frame code): GK71B
Overall length: 2,090 mm (82.3 in.)
Overall width: 710 mm (28.0 in.)
Overall height: 1,185 mm (46.7 in.)
Wheelbase: 1,425 mm (56.1 in.)
Ground Clearance: 135mm (5.3 in.)
Dry mass (weight): 152 kg (334 lbs)
Engine type: Water-cooled DOHC inline-4, 16 valves, TSCC
Bore x stroke: 53,0 mm x 45,2 mm (2.087 x 1.780 in.)
Piston displacement: 398 cc
Compression ratio: 11,3 :1
Maximum power: 59 hp/ 11,000 rpm
Maximum torque: 4,0 kg-m/ 9,000 rpm
Maximum speed: 175 kph
Starting system: Electric starter
Lubrication system: Wet sump
Carburetor: AISAN AS27VW x 2
Clutch type: Wet multi-plate
Transmission type: 6-speed constant mesh
Gearshift pattern: 1-down, 5-up
Primary reduction ratio: 2.212
1st gear ratio: 3.166
2nd gear ratio: 2.125
3rd gear ratio: 1.631
4th gear ratio: 1.333
5th gear ratio: 1.173
6th gear ratio: 1.083
Final drive: 3.066 chain
Frame type: Aluminum angular pipe double cradle
Caster: 27° 25′
Trail: 96 mm
Front suspension: Telescopic, coil spring, oil dampened with anti-dive
Rear suspension: Full floater suspension system, spring pre-load fully adjustable, oil dampened
Front brake: Dual hydraulic disc, four piston calipers
Rear brake: Single hydraulic disc, dual piston calipers
Front tire dimensions: 110/90-16 54h
Rear tire dimensions: 110/90-18 61h
Ignition type: fully transistorized
Ignition timing: 15º BTDC below at 1650 r/min and 35º BTDC above 3.500 r/min
Spark plug: ND U24FS-U or NGK C8HA
Battery: 12V 39.6 kC (11Ah)/10HR
Generator : Three-phase A.C. Generator
Headlight: 12V 35/35w x 2
Power/weight ratio: 2,57 kg/ps
Center stand: Yes
Fuel tank: 18 l.
Reserve: 3.5 l.
Engine oil: 2.6 l.
Front fork oil (each leg): 397 ml.
Cooling solution: 2,185 ml.
Picture Gallery Suzuki GSX-R 400 1985