| MODEL | BMW R 65 MONO 1985 - 1993 |
| Year | 1985 - 1993 |
| Engine Type | Four stroke, two cylinder horizontally opposed boxer, pushrod operated OHV, 2 valves per cylinder |
| Displacement / Capacity | 649.6 cc / 39.6 cu in |
| Bore X Stroke | 82 x 61.5 mm |
| Compression Ratio | 8.4:1 |
| Cooling System | Air cooled |
| Max Power | 35 kW / 48 hp @ 7250 rpm |
| Max Torque | 45.1 Nm / 33.3 lb-ft @ 6000 rpm |
| Ignition | Bosch contactless electronic |
| Induction | 2 x Bing constant depression carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | Single plate, dry, diaphragm spring |
| Final Drive | Shaft |
| CHASSIS SPECS | |
| Frame | Double loop tubular steel with bolted rear section |
| Front Suspension | Telescopic hydraulic fork, 175 mm / 6.9 in travel |
| Rear Suspension | BMW Monolever single-sided swingarm, 120 mm / 4.7 in travel |
| Front Brakes | 2 x 260 mm discs, 2 piston calipers |
| Rear Brakes | 200 mm drum |
| DIMENSION SPECS | |
| Overall Length | 2175 mm / 85.6 in |
| Overall Width | 800 mm / 31.5 in |
| Overall Height | 1106 mm / 43.5 in |
| Seat Height | 807 mm / 31.8 in |
| Wheelbase | 1447 mm / 57.0 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 196 kg / 432 lbs |
| WHEEL SPECS | |
| Front Tyre | 90/90-18 |
| Rear Tyre | 120/90-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 22 Litres / 5.8 US gal |
| Fuel Consumption | 5.95 L/100 km / 39.5 mpg (US) |
| Top Speed | 173 km/h / 106 mph |
The second-generation R 65, which moved the 650 cc boxer into the larger R 80 frame with the single-sided Monolever rear swingarm and a central shock. It was offered in a full-power 48 hp form and a 27 hp version for insurance and licence classes, and stayed in the range as BMW's smallest boxer until 1993. Tall gearing and long-travel suspension suited it to relaxed touring on rough roads.
