FJ 1100

1984 Yamaha FJ 1100 Technical Analysis & Specification Breakdown

Positioned in Yamaha's sport touring motorcycle lineup, the 1984 Yamaha FJ 1100 relies on a 1097 cc (66.9 cu in) air-cooled in-line four, four-stroke powerplant. In factory specification, peak output is rated at 125 HP (91.2 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 113.9 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.

On the scales, the FJ 1100 measures 261 kg (575 lbs) wet (curb), translating to a power-to-weight ratio of 0.48 HP/kg (2.09 kg per horsepower). The 24-liter (6.3 US gal) fuel tank supports practical everyday commuting and weekend road stints.

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.