Thunderbird

1997 Triumph Thunderbird Technical Analysis & Specification Breakdown

Positioned in Triumph's classic motorcycle lineup, the 1997 Triumph Thunderbird relies on a 885 cc (54 cu in) liquid-cooled in-line three, four-stroke powerplant. In factory specification, peak output is rated at 70 HP (51.1 kW) at 8,000 rpm while maximum torque reaches 72 Nm (53.1 lb-ft) at 4,800 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 79.1 HP per liter and a 3,200 rpm working window between peak torque (4,800 rpm) and peak power (8,000 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the Thunderbird measures 220 kg (485 lbs) dry, translating to a power-to-weight ratio of 0.32 HP/kg (3.14 kg per horsepower). Rider ergonomics and chassis geometry center around a 750 mm (29.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops.

Within MotoLibrary's Triumph archive, this model family spans 16 indexed model years from 1995 to 2018, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.