Suzuki GF 250F (1985-86) vs Gilera 300 Extra (1964-69) vs Suzuki GS 650E (1981-82)
Comparison technical specifications
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| Make: | Suzuki | Gilera | Suzuki |
| Model: | GF 250F | 300 Extra | GS 650E |
| Years: | 1985-86 | 1964-69 | 1981-82 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, single cylinder, 2 valves | Four stroke, transverse four cylinders, DOHC, 2 valves per cylinder. |
| Capacity: | 249 cc / 15.2 cu in | 300 cc / 18.3 cu-in | 673 cc / 41 cu in |
| Bore x Stroke: | 44 х 41 mm | 60 x 54 mm | 62 x 55.8 mm |
| Compression Ratio: | 11.3:1 | 7.8:1 | 9.4:1 |
| Cooling System: | Liquid cooled | Air Cooled | Air cooled |
| Starting: | Electric | Kick | Electric |
| Max Power: | 30.6 kW / 41 hp @ 12500 rpm | 10.9 kW / 15 hp @ 8000 rpm | 53.2 kW / 73 hp @ 9400 rpm |
| Transmission: | 6 Speed | 4 Speed | 5 Speed |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | Telescopic forks | Hydraulic telescopic forks | 35 mm Kayaba fork |
| Rear Suspension: | Mono shock | Dual chocks | Dual Kayaba shocks adjustable spring preload |
| Front Brakes: | Single disc | Drum | 2 x 275 mm discs, 1 piston calipers |
| Rear Brakes: | Single disc | Drum | Single 275 mm disc, 1 piston caliper |
| Front Tyre: | 100/90-16 | 3.00 -17 | 3.25 H19 |
| Rear Tyre: | 110/80-18 | 3.25 -17 | 3.75H 18 |