In 1985, BMW released the R 65 Monolever, which was presented as a successor to the small series and was based on the success of the 800cc R 80 and R 80 RT versions. The R 65 Monolever combined the single-sided swingarm frame concept of the 800cc models and the 650cc short-stroke engine used by the old R 65 and R 65 ls models.
The 1985 BMW R 65 was available in two versions with different performance levels that fitted both beginners with the 27 hp model and the more seasoned ones with the 48 hp model. Compared to its predecessor, the two-hp reduced output was achieved with reduced engine compression.
The R 65 Monolever was powered by a 649cc flat-twin engine with a power output of 48 hp at 7,250 rpm and 45 Nm (33 lb-ft) of torque available at 3,000 rpm. The power produced by the engine was sent to a five-speed manual transmission that pushed the bike to a top speed of 173 kph (106 mph).
The double-loop tubular steel frame with a bolted rear section packed a telescopic fork on the front end and a BMW Monolever swingarm on the rear wheel, acting as suspension.
Packed from the factory, the model came with standard features such as lightweight cast-aluminum wheels, a dual seat, passenger grab rails, a dual exhaust system, an analog instrument cluster, a center stand, a blacked-out steel frame, and a center stand with the scale tipped at 205 kg (452 lbs).