At the heart of the 2018 Triumph Thunderbird Commander custom - cruiser motorcycle, Triumph relies on a 1699 cc (103.7 cu in) liquid-cooled twin, four-stroke powerplant. In factory specification, peak output is rated at 94 HP (68.6 kW) at 5,400 rpm while maximum torque reaches 151 Nm (111.4 lb-ft) at 3,550 rpm, transferring power to the rear wheel through a 6-speed gearbox and belt final drive. With a specific output of 55.3 HP per liter and a 1,850 rpm working window between peak torque (3,550 rpm) and peak power (5,400 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Thunderbird Commander measures 317 kg (699 lbs) dry, translating to a power-to-weight ratio of 0.3 HP/kg (3.37 kg per horsepower). Rider ergonomics and chassis geometry center around a 700 mm (27.6 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,615 mm (63.6 in) wheelbase engineered for planted straight-line stability. The 22-liter (5.8 US gal) fuel tank paired with a rated consumption of 7.13 L/100 km provides an estimated theoretical range of roughly 309 km (192 miles) between fill-ups.
Within MotoLibrary's Triumph archive, this model family spans 4 indexed model years from 2014 to 2019, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
55.3 HP/L
Power-to-Weight
0.3 HP/kg (3.37 kg/HP)
Power Band Window
3,550–5,400 rpm
Theoretical Range
~309 km (192 mi)
Engine
Displacement1699.0 ccm (103.67 cubic inches)
Engine TypeTwin, four-stroke
Engine Details270º firing interval
Power94.0 HP (68.6 kW)) @ 5400 RPM
Torque151.0 Nm (15.4 kgf-m or 111.4 ft.lbs) @ 3550 RPM
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.
