In 1987, alongside the R 80 GS and R 100 GS models, BMW launched the R 65 GS as an entry-level version for riders that were particularly attracted by two-cylinder enduro motorcycles.
Visually, the 1987 BMW R 65 GS was identical to the discontinued R 80 G/S model, with the only difference being the displacement of the single-cylinder engine, which had 650cc with 27 hp instead of 800cc with 50 hp.
The trust of the R 65 GS came from the 649cc flat-twin engine with a power output of 27 hp at 5,500 rpm and 45 Nm (33 lb-ft) of torque available at 6,000 rpm in combination with a five-speed manual transmission and a low curb weight of 198 kg (436 lbs), the bike registered a top speed of 146 kph (91 mph).
The enduro motorcycle came with standard features such as laced wheels, knobby tires, a dual seat, a rear luggage rack, passenger grab rails, a telescopic front fork, a Monolever rear suspension, front 260 mm disc brakes coupled to a rear 200 mm drum unit, a small fairing, an analog instrument cluster, and a center stand.
The model, with its low curb weight and the well-tuned high torque boxer engine, was very agile to drive, but unfortunately, the low sales figures forced BMW to take the model out of the program in 1992.