2008 Triumph Bonneville Black Technical Analysis & Specification Breakdown
Engineered by Triumph for the classic motorcycle segment, the 2008 Triumph Bonneville Black pairs a 865 cc (52.8 cu in) air-cooled twin, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 66 HP (48.2 kW) at 7,200 rpm while maximum torque reaches 71 Nm (52.4 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 76.3 HP per liter and a 1,200 rpm working window between peak torque (6,000 rpm) and peak power (7,200 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 Bonneville Black measures 205 kg (452 lbs) dry, translating to a power-to-weight ratio of 0.32 HP/kg (3.11 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,500 mm (59.1 in) wheelbase engineered for balanced agility and highway composure. The 16-liter (4.2 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 2007 to 2010, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
76.3 HP/L
Power-to-Weight
0.32 HP/kg (3.11 kg/HP)
Power Band Window
6,000–7,200 rpm
Engine
Displacement865.0 ccm (52.78 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsTwin, two-stroke
Power66.0 HP (48.2 kW)) @ 7200 RPM
Torque71.0 Nm (7.2 kgf-m or 52.4 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.
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.
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.
