XJ 650 Turbo

1985 Yamaha XJ 650 Turbo Technical Analysis & Specification Breakdown

Engineered by Yamaha for the sport touring motorcycle segment, the 1985 Yamaha XJ 650 Turbo features a 653 cc (39.9 cu in) air-cooled in-line four, four-stroke configuration. In factory specification, peak output is rated at 90 HP (65.7 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 137.8 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 650 Turbo measures 262 kg (578 lbs) wet (curb), translating to a power-to-weight ratio of 0.34 HP/kg (2.91 kg per horsepower). The 19-liter (5 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 203 km/h (126 mph).

Within MotoLibrary's Yamaha archive, this model family spans 5 indexed model years from 1982 to 1986, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.