BMW R90S
The BMW R90S is a 900cc sport motorcycle produced by BMW from 1973 to 1976. BMW commissioned designer Hans Muth to oversee the R90S, which became the flagship of the boxer engined "/6" range. Sporting distinctive two-tone paintwork, a bikini fairing and a new tail, the R90S was intended to shrug off the enduring image of BMW bikes as staid and utilitarian.
| Manufacturer | BMW Motorrad |
|---|---|
| Production | 1973–1976 |
| Class | sport motorcycle |
| Engine | 898 cc Four-stroke, two-cylinder, horizontally opposed "Boxer", air-cooled |
| Bore / stroke | 90 mm × 70.6 mm (3.54 in × 2.78 in) |
| Top speed | 124 mph (200 km/h) |
| Power | 67 hp (50 kW) |
| Torque | 76 N⋅m (56 lbf⋅ft) |
| Transmission | 5-speed, shaft drive |
| Brakes | Front: dual 260 mm discs Rear: 200 mm drum |
| Tires | Front: 19 in (480 mm) Rear: 18 in (460 mm) |
| Wheelbase | 1,465 mm (57.7 in) |
| Dimensions | L: 2,180 mm (86 in) W: 740 mm (29 in) H: 1,210 mm (48 in) |
| Seat height | 820 mm (32 in) |
| Weight | 215 kg (474 lb) (wet) |
| Fuel capacity | 24 L (5.3 imp gal; 6.3 US gal) |
| Related | R90/6 |
The 67 bhp (50 kW) R90S had a top speed of 124 mph (200 km/h), it ran the quarter mile in around 13.5 seconds and it accelerated from 0 to 62 mph (0–100 km/h) in 4.8 seconds. Maximum torque was delivered at 5,500 rpm and the engine redlined at 7,200 rpm.
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