The BMW R100RT Mono was a motorcycle produced from 1987 to 1989, equipped with a four-stroke, two-cylinder horizontally opposed Boxer engine and a capacity of 980 cc. The motorcycle had a maximum power of 43.7 kW / 60 hp at 7000 rpm, and a maximum torque of 74 Nm / 7.5 kgf-m / 54.6 ft-lb at 6000 rpm. It had a five-speed transmission with a dry single plate clutch and diaphragm spring. The final drive was a shaft mechanism, and the frame was a double sown tubs dual cradle. The front suspension included a telescopic fork with hydraulic shock absorber, while the rear had a monolever swinging arm. The front brakes were two 260 mm discs with two piston calipers, and the rear had a simplex 200 mm drum. The dimensions were 2110 mm in length, 746 mm in width, and 1465 mm in height, with a wheelbase of 1465 mm and a seat height of 820 mm. The motorcycle weighed 238 kg and had a fuel capacity of 24 litres. The consumption average was 5.1 L/100 km, and it could reach a top speed of 203 km/h.
Technical specifications:
Make Model: BMW R 100RT Mono
| Year | 1987 – 89 |
|---|---|
| Engine | Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder |
| Capacity | 980 cc 59.8 cu in |
| Bore x Stroke | 94 x 70.6 mm |
| Cooling System | Air cooled |
| Compression Ratio | 8.45:1 |
| Lubrication | Wet sump |
| Induction | 2 x Constant depression carburettors, Bing 94/40/105 – 94/40/106 |
| Ignition | Battery ignition |
| Alternator | Bosch 12V/240 W |
| Battery | Bosch 0.6 hp (from 1978: 0.7 Kw) |
| Starting | Electric |
| Max Power | 43.7 kW / 60 hp @ 7000 rpm |
| Max Torque | 74 Nm / 7.5 kgf-m / 54.6 ft-lb @ 6000 rpm |
| Clutch | Dry single plate, with diaphragm spring |
| Transmission | 5 Speed |
| Gear Ratio | 1st 4.4 / 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50: 1 |
| Gear Ratio Sport Version | 1st 3.38 / 2nd 2.43 / 3rd 1.93 / 4th 1.67 / 5th 1.50 |
| Rear Wheel Ratio | 1:2.91 or 1:3.00 |
| Bevel / Crown wheel | 11 / 32 teeth or 10 / 32 teeth |
| Final Drive | Shaft |
| Frame | Double sown tubs, dual cradle |
| Front Suspension | Telescopic fork with hydraulic shock absorber. |
| Front Wheel Travel | 200 mm / 7.8 in |
| Rear Suspension | Monolever swinging arm |
| Rear Wheel Travel | 125 mm / 4.9 in |
| Front Brakes | 2 x 260mm discs, 2 piston calipers |
| Rear Brakes | Simplex 200 mm drum |
| Front Wheel | 1.85 B 19 |
| Rear Wheel | 2.75 C 18 |
| Front Tyre | 3.25 H-19 |
| Rear Tyre | 4.00 H-18 |
| Dimensions | Length 2110 mm / 87 in Width 746 mm / 29.37 in Height 1465 mm / 57.67 in |
| Wheelbase | 1465 mm / 57.67 in |
| Seat Height | 820 mm / 32.3 in |
| Ground Clearance | 165 mm / 6.49 in |
| Wet Weight | 238 Kg / 525 lbs |
| Fuel Capacity | 24 Litres / 6.3 US gal |
| Consumption Average | 5.1 L/100 km / 19.6 km/l / 46 US mpg |
| Standing 1/4 Mile | 13.8 sec / 153 km/h / 95 mph |
| Top Speed | 203 km/h / 126 mph |
