suzuki250fours

These pages focus on the Suzuki GS250FW and GF250, which both feature essentially the same engine, a liquid-cooled four-cylinder four-stroke 250cc unit. The engine features chain-driven double overhead camshafts and two valves per cylinder. Carburetion is by two Mikuni's and there is a six-speed gearbox and chain-drive. Other features of these models includes anti-dive front suspension, full-floater rear suspension, and both a side-stand and centre-stand.

GS250FW

GS250FW
The GS250FW has a single front brake disc and a drum at rear. Two styles of fairing were available, a 'half cowl' or 'mini-cowl'.

Production: 1983 on
Max Power: 36ps @ 11,000rpm
Max Torque: 2.3kg-m @ 10,000rpm
Colours: Blue, white/red, white/grey, red
(This list of colours is by no means complete - It is based on colour schemes I have seen.)

GF250

GF250

The GF series was a redesign of the GS, and the frame and bodywork were completely redesigned. The new frame was lighter and lowered the seat height to 750mm. GF's also had a disc rear brake.

Early GF models had no fairing, but later models had a small frame-mounted half-fairing, twin front brake discs and more power. A sticker on one of the fork legs advertised "Deca Piston", there now being four pistons per disc up front and two at the back. Other important changes were made to the engine - larger inlet valves, altered timing, an increase in compression ratio, lighter internal engine components, and a new four-into-one exhaust system.

Production: 1985 on
Max Power: 41ps @ 12,500rpm (later 45ps)
Max Torque: 2.4kg-m @ 10,500rpm
Dry Weight: 139kg
Colours: to 1988 - white/blue; 1988 on - white/blue, red/black, gray/red/black
(This list of colours is by no means complete - It is based on colour schemes I have seen.)

GF250S Special

A special version of the GF250 was also available. Called the GF250S Special, this model seems to differ from the regular GF250S by having a single seat with storage compartment, an extra piece of bodywork below the front of the frame, and no centre stand.

GF250S Brochure Page 1 Page 2

Further Development

The GF's successor is the GSX250F, otherwise known as the 'Across'. The Across is a little heavier, has a smaller fuel tank (12 litres), no centrestand, but a higher redline (16,500 rpm) and top speed (185 km/h). The feature that the Across is best known for is that it has a storage compartment large enough to hold a helmet where the fuel tank normally is.