RD 250 LC (reduced effect)

1983 Yamaha RD 250 LC (reduced effect) Technical Analysis & Specification Breakdown

At the heart of the 1983 Yamaha RD 250 LC (reduced effect) motorcycle, Yamaha relies on a 247 cc (15.1 cu in) liquid-cooled twin, two-stroke powerplant. In factory specification, peak output is rated at 27 HP (19.7 kW) at 8,100 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 109.3 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 RD 250 LC (reduced effect) measures 158 kg (348 lbs) wet (curb), translating to a power-to-weight ratio of 0.17 HP/kg (5.85 kg per horsepower). The 17-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 149 km/h (93 mph).

Within MotoLibrary's Yamaha archive, this model family spans 2 indexed model years from 1982 to 1983, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.