Segment: Naked / Road
Production years: 1973, 1974, 1975, 1976
In 1973, BMW released the R 90 S model as the flagship model of the revised /6 series and ranked among the fastest series motorcycles in the world with a top speed of 200 kph (124 mph). This was possible due to the 67 hp achieved by boosting the two-cylinder boxer engine to 900cc and with the help of Dell’orto carburetors.
To keep the high performance under control, BMW fitted the bike with a double disc brake system on the front wheel, which was a first on the motorcycle market.
For this model, BMW hired for the first time a designer which created a profile for the bike that set it apart from other motorcycles in the market with the world’s first cockpit fairing attached to the handlebar, a tank designed with flowing contours, and a characteristic bench seat.
In 1975, BMW introduced a new livery for the bike with the Daytona Orange that became a favorite among collectors.
The 1973 BMW R 90 S featured an 898cc air-cooled four-stroke two-cylinder boxer engine with a power output of 67 hp at 7,000 rpm and 76 Nm (56 lb-ft) of torque at 5,000 rpm.
The bike came with standard features such as a dual seat, a pillion grab rail, a nose-fairing with a windscreen, a dual exhaust system, an analog instrumentation panel, wire-spoked wheels, and a side stand.
engine specs | Type: | air-cooled, four-stroke, two cylinder boxer, 2 valves per cylinder | Displacement: | 898 cm3 | Bore X Stroke: | 3.5x2.8 in OR 89 mm | Compression Ratio: | 9.5:1 | Horsepower: | 67/7000 KW(hp)/RPM | Torque: | 56/5500 lb-ft/RPM OR 76/5500 Nm/RPM | Fuel System: | 2xDellOrto PHM 38 carburetors |
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transmission specs | Gearbox: | 5-speed, manual | Clutch: | dry, single plate, diaphragm spring | Primary Drive: | - | Final Drive: | shaft |
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chassis specs | Frame: | steel | Front Suspension: | telescopic hydraulic fork | Rear Suspension: | dual adjustable shocks | Front Brake: | dual 260mm discs, 1-piston calipers | Rear Brake: | 200mm drum |
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dimension specs | Overall Length: | 85.8 in OR 2179 mm | Overall Width: | 29.1 in OR 739 mm | Seat Height: | 32.2 in OR 818 mm | Wheelbase: | 57.7 in OR 1466 mm | Ground Clearance: | 6.5 in OR 165 mm | Weight: | 474 lbs OR 215 kg | Fuel Capacity: | 6.3 gallons OR 23.8 L |
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tyres specs | Front: | 3.25 - H19 | Rear: | 4.00 - H18 |
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