BMW F 650 ST
Number sold 39.470 (31.12.1997)
Price 10.950,- DM
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| Type | four-stroke, vertical single cylinder engine, liquid-cooled |
| Bore/stroke | 100 x 83 mm |
| Cubic capacity | 652 cm3 |
| Max power | 48 PS (35 kW) at 6500 rpm [34 PS (25 kW) at 5700 rpm] |
| Max torque | 57 Nm at 5200 rpm [48 Nm at 4200 rpm] |
| Compression ratio | 9,7 : 1 |
| Valves per cylinder | 4 |
| Valve control | DOHC, using drive chain and cup tappets |
| Carburation system | 2 constant depression carburettors, Mikuni Ø 33mm |
| Engine lubrication | dry sump |
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| Power transmission | |
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| Clutch | multi-plate clutch in oil bath |
| Number of gears | 5 |
| Gear selection | dog-type gearbox (ratchet foot lever) |
| Gear ratios | 2,75 / 1,75 / 1,31 / 1,05 / 0,88 : 1 |
| Rear wheel ratio | 1 : 2,94 |
| Bevel/crown wheel | 16 / 47 teeth |
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| Electrical system | |
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| Alternator | 12 V / 280 W |
| Ignition | contact-free high-voltage capacitor ignition |
| Starter | 0,9 kW |
| Spark plugs | NGK D 8 EA |
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| Suspension | |
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| Type of frame | single-loop tubular frame with bolt-on trussing, engine serving as load-bearing component |
| Front suspension | telescopic fork with hydraulic shock absorber |
| Rear suspension | long swinging arm with adjustable central strut |
| Spring travel | 170 / 120 mm |
| Rims front | 2,5 x 18 |
| Rims rear | 3,00 x 17 |
| Tyres front | 100/90 - 19 56 |
| Tyres rear | 130/80 - 17 65 |
| Brakes front | single disc brake Ø 300 mm |
| Brakes rear | single disc brake Ø 240 mm |
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| Dimensions and weights | |
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| Length x width x height | 2160 x 880 x 1220 mm |
| Wheel base | 1465 mm |
| Ground clearance | 155 mm |
| Tank capacity | 17,5 l |
| Unladen weight, full tank | 191 kg |
| Max permissible weight | 371 kg |
| Fuel consumption | 3,8 l / 100 km ( at constant 90 km/h) |
| Acceleration | 0 - 100 km/h 6,2 s |
| Top speed | 163 km/h [145 km/h] |
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