The 1990 BMW R100 RT Mono was virtually unchanged from previous models, featuring the same technical, visual, and performance specifications without any significant modifications.
The BMW R100 RT Mono was one of many versions of the base R100 model created by the House of Munich, receiving the same treatment as the RS Mono, which consisted of a BMW Motorrad Monolever swingarm.
In the visual department, the motorcycle had standard features, such as a half fairing with a round headlight, a windscreen for better protection against elements, a one-piece dual seat, side-mounted panniers, a dual exhaust system with a silencer on each side, and eight-spoke aluminum wheels.
In the performance department, the 1990 BMW R100 RT Mono had its soul brought to life by a 980cc four-stroke air-cooled twin-cylinder boxer engine that delivered 60 hp with maximum strength at 7,000 rpm and 75 Nm (55 lb-ft) torque at 6,000 rpm.
The bike was built around a steel frame that housed the suspension system. It comprised a telescopic fork with a hydraulic shock absorber on the front that offered 200 mm of travel and a single-sided swingarm with a single shock absorber on the rear that provided 125 mm of travel.
As for the stopping power, the bike's wheels were fitted with two 260 mm brake discs engaged by dual-piston calipers on the front wheel and a 200 mm drum braking unit on the rear, providing optimum braking performance.