CB 450 S

1989 Honda CB 450 S Technical Analysis & Specification Breakdown

Built around Honda's naked motorcycle platform, the 1989 Honda CB 450 S features a 447 cc (27.3 cu in) air-cooled twin, four-stroke configuration. In factory specification, peak output is rated at 44 HP (32.1 kW) at 9,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 98.4 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 CB 450 S measures 185 kg (408 lbs) wet (curb), translating to a power-to-weight ratio of 0.24 HP/kg (4.2 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 163 km/h (101 mph).

Within MotoLibrary's Honda archive, this model family spans 5 indexed model years from 1986 to 1990, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.