Engineered by Triumph for the classic motorcycle segment, the 2005 Triumph Thruxton 900 utilizes a 865 cc (52.8 cu in) air-cooled twin, four-stroke layout. In factory specification, peak output is rated at 70 HP (51.1 kW) at 7,250 rpm while maximum torque reaches 72 Nm (53.1 lb-ft) at 6,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 80.9 HP per liter and a 1,250 rpm working window between peak torque (6,000 rpm) and peak power (7,250 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 Thruxton 900 measures 205 kg (452 lbs) dry, translating to a power-to-weight ratio of 0.34 HP/kg (2.93 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 1,490 mm (58.7 in) wheelbase engineered for balanced agility and highway composure. The 16.6-liter (4.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Triumph archive, this model family spans 3 indexed model years from 2004 to 2006, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
80.9 HP/L
Power-to-Weight
0.34 HP/kg (2.93 kg/HP)
Power Band Window
6,000–7,250 rpm
Standover Height
790 mm (31.1 in)
Engine
Displacement865.0 ccm (52.78 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsTwin, four-stroke
Power70.0 HP (51.1 kW)) @ 7250 RPM
Torque72.0 Nm (7.3 kgf-m or 53.1 ft.lbs) @ 6000 RPM
Compression9.2:1
Bore x Stroke90.0 x 68.0 mm (3.5 x 2.7 inches)
Fuel SystemCarburettor. Twin carburettors with throttle position sensor and electric carburettor heaters
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionDigital - inductive type
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, multi-plate
Chassis
Frame TypeTubular steel cradle
Rake27.0°
Front Suspension41mm forks with adjustable preload
Rear SuspensionChromed spring twin shocks with adjustable preload
Wheelbase1490 mm (58.7 inches)
Wheels & Brakes
Front Tyre100/90-19
Rear Tyre130/80-17
Front BrakesSingle disc. 2-piston calipers
Front Brake Ø320 mm (12.6 inches)
Rear BrakesSingle disc. 2-piston calipers
Rear Brake Ø255 mm (10.0 inches)
Dimensions & Weight
Dry Weight205.0 kg (451.9 pounds)
Power/Weight0.3415 HP/kg
Seat Height790 mm (31.1 inches) If adjustable, lowest setting.
Overall Height1095 mm (43.1 inches)
Overall Length2150 mm (84.6 inches)
Overall Width695 mm (27.4 inches)
Fuel Capacity16.60 litres (4.39 US gallons)
Other
Color OptionsJet Black/Silver, Racing Yellow/Silver, Caspian Blue/Silver
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
