2018 Triumph Bonneville T120 Black Technical Analysis & Specification Breakdown
Built around Triumph's classic motorcycle platform, the 2018 Triumph Bonneville T120 Black relies on a 1200 cc (73.2 cu in) air-cooled twin, four-stroke powerplant. In factory specification, peak output is rated at 80 HP (58.4 kW) at 6,550 rpm while maximum torque reaches 105 Nm (77.4 lb-ft) at 3,100 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 66.7 HP per liter and a 3,450 rpm working window between peak torque (3,100 rpm) and peak power (6,550 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 T120 Black measures 224 kg (494 lbs) dry, translating to a power-to-weight ratio of 0.36 HP/kg (2.8 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 1,445 mm (56.9 in) wheelbase engineered for balanced agility and highway composure. The 12.87-liter (3.4 US gal) fuel tank paired with a rated consumption of 4.5 L/100 km provides an estimated theoretical range of roughly 286 km (178 miles) between fill-ups.
Within MotoLibrary's Triumph archive, this model family spans 6 indexed model years from 2016 to 2026, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
66.7 HP/L
Power-to-Weight
0.36 HP/kg (2.8 kg/HP)
Power Band Window
3,100–6,550 rpm
Theoretical Range
~286 km (178 mi)
Engine
Displacement1200.0 ccm (73.22 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsBlack engine
Power80.0 HP (58.4 kW)) @ 6550 RPM
Torque105.0 Nm (10.7 kgf-m or 77.4 ft.lbs) @ 3100 RPM
Compression10.0:1
Bore x Stroke97.6 x 80.0 mm (3.8 x 3.1 inches)
Valves/Cylinder4
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
CoolingAir
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchWet, multi-plate assist clutch
DrivelineX ring chain. Primary drive: Gear.
Performance
Fuel Consumption4.50 litres/100 km (22.2 km/l or 52.27 mpg)
Greenhouse Gases104.4 CO2 g/km. (CO2 - Carbon dioxide emission)
ExhaustBlack 2 into 2 exhaust system with twin black silencers
Seat Height790 mm (31.1 inches) If adjustable, lowest setting.
Overall Height1125 mm (44.3 inches)
Overall Length2230 mm (87.8 inches)
Overall Width785 mm (30.9 inches)
Fuel Capacity12.87 litres (3.40 US gallons)
Oil Capacity4.50 litres (4.76 US quarts)
Other
StarterElectric
Color OptionsJet Black, Matt Graphite
InstrumentsLCD multi-functional instrument pack with analogue speedometer, analogue tachometer, gear position indicator, fuel gauge, range to empty indication, service indicator, clock, trip computer.
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.
