K 100 LT

1991 BMW K 100 LT Technical Analysis & Specification Breakdown

Built around BMW's touring motorcycle platform, the 1991 BMW K 100 LT relies on a 987 cc (60.2 cu in) liquid-cooled in-line four, four-stroke powerplant. In factory specification, peak output is rated at 90 HP (65.7 kW) at 8,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and shaft drive (cardan) final drive. With a specific output of 91.2 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the K 100 LT measures 273 kg (602 lbs) wet (curb), translating to a power-to-weight ratio of 0.33 HP/kg (3.03 kg per horsepower). The 22-liter (5.8 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 215 km/h (134 mph).

Within MotoLibrary's BMW archive, this model family spans 6 indexed model years from 1986 to 1991, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.