1340 Softail Fat Boy

1993 Harley-Davidson 1340 Softail Fat Boy Technical Analysis & Specification Breakdown

Built around Harley-Davidson's custom - cruiser motorcycle platform, the 1993 Harley-Davidson 1340 Softail Fat Boy relies on a 1338 cc (81.6 cu in) air-cooled v2, four-stroke powerplant. In factory specification, peak output is rated at 48 HP (35 kW) at 4,900 rpm while maximum torque reaches 86.3 Nm (63.7 lb-ft) at 2,400 rpm, transferring power to the rear wheel through a 5-speed gearbox and belt final drive. With a specific output of 35.9 HP per liter and a 2,500 rpm working window between peak torque (2,400 rpm) and peak power (4,900 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.

On the scales, the 1340 Softail Fat Boy measures 304 kg (670 lbs) wet (curb), translating to a power-to-weight ratio of 0.16 HP/kg (6.33 kg per horsepower). Rider ergonomics and chassis geometry center around a 673 mm (26.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,636 mm (64.4 in) wheelbase engineered for planted straight-line stability. The 15.9-liter (4.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Harley-Davidson archive, this model family spans 3 indexed model years from 1993 to 1995, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.