Suzuki GS425 (1978)

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The Suzuki GS 425 was manufactured in 1978 and is equipped with a four-stroke parallel twin cylinder DOHC engine. The engine has a displacement of 423cc and a compression ratio of 9.1:1. The bike has a max power of 29.8 kW at 7000 rpm and is cooled by an air-cooled system. It uses 2 x 34 mm Mikuni carburetors as an induction system and has both electric and kick starting options. The wet multi-plate clutch is used to handle the transmission, which is a 6-speed system. The final drive of the bike is implemented by means of a chain system. The front suspension is a telescopic fork, while the rear suspension consists of twin shocks with a coil spring attached to it. The front brake is a single disc with an 11-inch diameter while the rear brake uses a drum system with a 7-inch diameter. The Suzuki GS 425 is fitted with tyres with measurements of 3.00-18 and 3.75-18 for the front and rear respectively. The bike measures with a seat height of 787mm and a dry weight of 173kg. Finally, the fuel capacity of the bike is 15litres, which yields 4.0 US gallons or 3.3 Imperial gallons.

Technical specifications:

Make Model: Suzuki GS 425

Year: 1978


Engine: Four stroke, parallel twin cylinder, DOHC, 2 valves per cylinder.
Capacity: 423 cc / 25.8 cu in
Bore x Stroke: 67 x 60 mm
Compression Ratio: 9.1:1
Cooling System: Air cooled
Induction: 2 x 34 mm Mikuni carburetors
Starting: Electric and kick
Clutch: Wet multiplafe
Max Power: 29.8 kW / 40 hp @ 7000 rpm
Transmission: 6 Speed
Final Drive: Chain
Front Suspension: Telescopic fork
Rear Suspension: Twin shocks, coil spring over
Front Brakes: Single disc, 11in
Rear Brakes: Drum, 7 in

Front Tyre: 3.00-18
Rear Tyre: 3.75-18
Seat Height: 787 mm / 31 in
Dry Weight: 173 kg / 382 lbs
Fuel Capacity: 15 Litres / 4.0 US gal / 3.3 Imp gal

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