FLST 1340 Heritage Softail (reduced effect)

1989 Harley-Davidson FLST 1340 Heritage Softail (reduced effect) Technical Analysis & Specification Breakdown

Positioned in Harley-Davidson's allround motorcycle lineup, the 1989 Harley-Davidson FLST 1340 Heritage Softail (reduced effect) 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 46 HP (33.6 kW) at 5,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and belt final drive. With a specific output of 34.4 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 FLST 1340 Heritage Softail (reduced effect) measures 314 kg (692 lbs) wet (curb), translating to a power-to-weight ratio of 0.15 HP/kg (6.83 kg per horsepower). The 13-liter (3.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Harley-Davidson archive, this model family spans 2 indexed model years from 1988 to 1989, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.