BMW K100 RS (1989-1990) Specs, Performance & Photos

The BMW K100 RS was a sports-touring motorcycle derived from the standard K100 model. The RS debuted in 1983 and addressed riders searching for a dependable, stable machine with enhanced performance.

In 1989, the German bike maker released the BMW K100 RS, a motorcycle in its seventh consecutive production year that brought several modifications that improved its overall capabilities.

Some improvements included a revised engine with more valves per cylinder, a new dual seat, a new handlebar, new footpeg brackets, lightened pistons, a new Bosch Motronic, new spacers between the fairing and mirrors, a new shifter chassis, a new latch design for the optional saddlebags, and more.

Visually, the bike had standard features, such as a half fairing with a single headlight unit, a windscreen, a one-piece dual seat, an engine cover, a four-into-one exhaust system with a silencer mounted on the left-hand side, and eight-spoke aluminum alloy wheels.

In the performance department, the 1989 BMW K100 RS had installed a 987cc four-stroke liquid-cooled four-cylinder engine that delivered more power and torque than its predecessor. 95 hp at 7,500 rpm and 85 Nm (63 lb-ft) torque at 6,000 rpm were sent to the rear wheel through a five-speed transmission and a shaft drive.

The braking system was retained from the previous model, comprising two 285 mm brake discs and a dual-piston caliper on the front and a 285 mm brake disc with a single-piston caliper on the rear.