Suzuki GF250S
1986–1989

I have tried to tell the model history of the Suzuki GF 250 S as I know it. I would be grateful of any contributions — sales brochures, magazine ads, magazine articles, pictures, specs, facts, corrections etc. Please scan the material in JPEG format (large enough that all the details are visible) and send them to me. Please tell me the source and the publication date if possible. If you send me pictures of your own bike, please follow these instructions.

1986 Suzuki year code: G

Suzuki GF250S was a sporty motorcycle with a 250cc 4-cylinder engine released by Suzuki in February 1986. It followed the naked GF250, released a year earlier. The models were technically identica but insteda of being completely ”naked”, the GF250S had a half cowl, lowering the wind resistant, and most of all making the bike look sportier. Its liquid-cooled single cam (2 valves per cylinder) inline-4 engine was already used in the Suzuki GS250FW, released in 1983. The carburetor is a 2-barrel type with 2 cylinders in one body. The GF250 is about 18 kg (40 lbs) lighter than its precessor, the FW250 that also had a half cowl fairing. The engine is mounted on a steel L-BOX frame and it's got a 16-inch front wheel and 18-inch rear wheel. The rear suspension is a full floater type that can adjust the preload with a separate dial. The Suzuki GF250 appeared early in the mid-eighties when the racing replicas were very popular. In 1986 Suzuki released the GF250S, equipped with a half cowl, and in 1987 it launched the GSX-R250. No noticeable changes were made to the model since its launch 1986. Both GF250 models were discontinued in 1989. A Special model was also launched in June 1986, a single-seater with wider rear tyre and an extra cowl under the engine, making the bike even sportier. The GF250 Special had a dark blue meter panel. Colors: Plastician Blue Metallic / Special White, Marble Pure Red / Bright Silver Metallic, Space Black / Italian Red The GF250S Special was Gray / White.

1986 Suzuki GF250S, Black/Blue/White seat with a Blue seat

1986 Suzuki GF 250 S Overall Length: 2 040 mm (80.3 in) Overall Width: 720 mm (28.3 in) Overall Height: 1 120 mm (44.1 in) Seat Height: 750 mm (29.5 in) Wheelbase: 1 370 mm (53.9 in) Ground clearance: 155 mm (6.1 in) Weight: 141 kg (310 lbs) Engine type: Air and oil-cooled 249 cc inline-2, DOHC, 4 valves. 45 hp (33.1 kW) @ 13 000 rpm, 25.5 Nm (2.6 kg-m) @ 10 500 rpm Click on the image for larger format.

1986 Suzuki GF 250 S Overall Length: 2 040 mm (80.3 in) Overall Width: 720 mm (28.3 in) Overall Height: 1 120 mm (44.1 in) Seat Height: 750 mm (29.5 in) Wheelbase: 1 370 mm (53.9 in) Ground clearance: 155 mm (6.1 in) Weight: 141 kg (310 lbs) Engine type: Air and oil-cooled 249 cc inline-2, DOHC, 4 valves. 45 hp (33.1 kW) @ 13 000 rpm, 25.5 Nm (2.6 kg-m) @ 10 500 rpm Here's even larger picture.

1986 Suzuki GF 250 S Special Overall Length: 2 040 mm (80.3 in) Overall Width: 720 mm (28.3 in) Overall Height: 1 120 mm (44.1 in) Seat Height: 750 mm (29.5 in) Wheelbase: 1 370 mm (53.9 in) Ground clearance: 155 mm (6.1 in) Dry Weight: 140 kg (308 lbs) Engine type: Air and oil-cooled 249 cc inline-2, DOHC, 4 valves. 45 hp (33.1 kW) @ 13 000 rpm, 25.5 Nm (2.6 kg-m) @ 10 500 rpm Click on the image for larger format.

1986 Suzuki GF 250 S Special Overall Length: 2 040 mm (80.3 in) Overall Width: 720 mm (28.3 in) Overall Height: 1 120 mm (44.1 in) Seat Height: 750 mm (29.5 in) Wheelbase: 1 370 mm (53.9 in) Ground clearance: 155 mm (6.1 in) Dry Weight: 140 kg (308 lbs) Engine type: Air and oil-cooled 249 cc inline-2, DOHC, 4 valves. 45 hp (33.1 kW) @ 13 000 rpm, 25.5 Nm (2.6 kg-m) @ 10 500 rpm Click on the image for larger format.

1986–1989 Suzuki GF250S specifications (Japan) Model code: GJ71C Overall length: 2 040 mm (80.3 in) Overall width: 720 mm (28.3 in) Overall height: 1 120 mm (44.1 in) Seat height: 750 mm (29.5 in) Wheelbase: 1 370 mm (53.9 in) Ground clearance: 155 mm (6.1 in) Dry weight: 140 kg (308 lbs) Engine type: Liquid-cooled inline-four, 4-stroke, single cam, 2 valves per cylindere Engine code: J702 Cylinder displacement: 249 cc Bore x Stroke: 44.0 x 41.0 mm (1.732 x 1.614 in) Compression ratio: 11.3 :1 Peak power: 45 hp (33.1 kW) @ 13 000 rpm Maximum torque 25.5 Nm (2.6 kg-m) @ 10 500 rpm Fuel economy: 46 km/l at 50 km/h Carburetor: BSW24 Starter method: Electric starter Ignition method: Full transistor Lubrication method: Wet sump Lubricating oil amount: 2.6 liter Fuel tank capacity: 15 liter Clutch type: Wet multi-plate type Transmission type: 6-speed constant mesh 1st gear ratio: 3.454 2nd gear ratio: 2.266 3rd gear ratio: 1.750 4th gear ratio: 1.450 5th gear ratio: 1.250 6th gear ratio: 1.150 Primary drive: 2.166 Secondary drive: 3.692 Frame type: Box type, double cradle Front brake type: Single hydraulic disc Rear brake type: Single hydraulic disc Front tire size: 100/90-16 54S GF250S rear tire size: 110/80-18 58S GF250S Special rear tire size: 120/80-18 62S Caster: 26°00' Trail: 106 mm (4.17 in) Steering angle (left–right): 34° Minimum turning radius: 3.2 m (10.50 feet) Recommended GF250S price in Japan: 489,000 yen Recommended GF250S Special price in Japan: 539,000 yen

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