FJ 1100 (reduced effect)

1984 Yamaha FJ 1100 (reduced effect) Technical Analysis & Specification Breakdown

At the heart of the 1984 Yamaha FJ 1100 (reduced effect) sport touring motorcycle, Yamaha features a 1097 cc (66.9 cu in) air-cooled in-line four, four-stroke configuration. In factory specification, peak output is rated at 100 HP (73 kW) at 9,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain 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 FJ 1100 (reduced effect) measures 261 kg (575 lbs) wet (curb), translating to a power-to-weight ratio of 0.38 HP/kg (2.61 kg per horsepower). The 24-liter (6.3 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 220 km/h (137 mph).

Within MotoLibrary's Yamaha archive, this model family spans 3 indexed model years from 1984 to 1986, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.