XS 750 E

1979 Yamaha XS 750 E Technical Analysis & Specification Breakdown

Built around Yamaha's sport motorcycle platform, the 1979 Yamaha XS 750 E pairs a 747 cc (45.6 cu in) air-cooled in-line three, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 74 HP (54 kW) at 8,400 rpm, transferring power to the rear wheel through a 5-speed gearbox and shaft drive (cardan) final drive. With a specific output of 99.1 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 XS 750 E measures 257 kg (567 lbs) wet (curb), translating to a power-to-weight ratio of 0.29 HP/kg (3.47 kg per horsepower). The 18-liter (4.8 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 198 km/h (123 mph).

Within MotoLibrary's Yamaha archive, this model family spans 2 indexed model years from 1978 to 1979, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.