FXB 1340 Sturgis

1981 Harley-Davidson FXB 1340 Sturgis Technical Analysis & Specification Breakdown

Built around Harley-Davidson's classic motorcycle platform, the 1981 Harley-Davidson FXB 1340 Sturgis pairs a 1337 cc (81.6 cu in) air-cooled v2, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 67 HP (48.9 kW) at 5,800 rpm, transferring power to the rear wheel through a 4-speed gearbox and belt final drive. With a specific output of 50.1 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.

On the scales, the FXB 1340 Sturgis measures 278 kg (613 lbs) wet (curb), translating to a power-to-weight ratio of 0.24 HP/kg (4.15 kg per horsepower). The 15.5-liter (4.1 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 170 km/h (106 mph).

Within MotoLibrary's Harley-Davidson archive, this model family spans 3 indexed model years from 1980 to 1982, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.