2004 Triumph Thunderbird Sport Technical Analysis & Specification Breakdown
Built around Triumph's classic motorcycle platform, the 2004 Triumph Thunderbird Sport features a 885 cc (54 cu in) liquid-cooled in-line three, four-stroke configuration. In factory specification, peak output is rated at 82 HP (59.9 kW) at 8,500 rpm while maximum torque reaches 76 Nm (56.1 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a 6-speed gearbox. With a specific output of 92.7 HP per liter and a 2,000 rpm working window between peak torque (6,500 rpm) and peak power (8,500 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 Sport measures 224 kg (494 lbs) dry, translating to a power-to-weight ratio of 0.37 HP/kg (2.73 kg per horsepower). Rider ergonomics and chassis geometry center around a 790 mm (31.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,580 mm (62.2 in) wheelbase engineered for planted straight-line stability. The 15-liter (4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Triumph archive, this model family spans 4 indexed model years from 1999 to 2004, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
92.7 HP/L
Power-to-Weight
0.37 HP/kg (2.73 kg/HP)
Power Band Window
6,500–8,500 rpm
Standover Height
790 mm (31.1 in)
Engine
Displacement885.0 ccm (54.00 cubic inches)
Engine TypeIn-line three, four-stroke
Engine DetailsIn-line three, four-stroke
Power82.0 HP (59.9 kW)) @ 8500 RPM
Torque76.0 Nm (7.7 kgf-m or 56.1 ft.lbs) @ 6500 RPM
Compression10.0:1
Bore x Stroke76.0 x 65.0 mm (3.0 x 2.6 inches)
Fuel SystemCarburettor
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingLiquid
Transmission
Gearbox6-speed
Chassis
Wheelbase1580 mm (62.2 inches)
Wheels & Brakes
Front Tyre110/70-R 17
Rear Tyre160/70-R 17
Front BrakesDouble disc
Front Brake Ø310 mm (12.2 inches)
Rear BrakesSingle disc
Rear Brake Ø285 mm (11.2 inches)
Dimensions & Weight
Dry Weight224.0 kg (493.8 pounds)
Power/Weight0.3661 HP/kg
Seat Height790 mm (31.1 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
