XJ 900 F

1987 Yamaha XJ 900 F Technical Analysis & Specification Breakdown

Built around Yamaha's touring motorcycle platform, the 1987 Yamaha XJ 900 F utilizes a 891 cc (54.4 cu in) air-cooled in-line four, four-stroke layout. In factory specification, peak output is rated at 98 HP (71.5 kW) at 9,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and shaft drive (cardan) final drive. With a specific output of 110 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 XJ 900 F measures 242 kg (534 lbs) wet (curb), translating to a power-to-weight ratio of 0.4 HP/kg (2.47 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 221 km/h (137 mph).

Within MotoLibrary's Yamaha archive, this model family spans 9 indexed model years from 1985 to 1994, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.