2021 Harley-Davidson Tri Glide Ultra Technical Analysis & Specification Breakdown
Engineered by Harley-Davidson for the touring motorcycle segment, the 2021 Harley-Davidson Tri Glide Ultra relies on a 1868 cc (114 cu in) air-cooled v2, four-stroke powerplant. In factory specification, peak output is rated at 100 HP (73 kW) at 5,000 rpm while maximum torque reaches 164.1 Nm (121 lb-ft) at 3,250 rpm, transferring power to the rear wheel through a 6-speed gearbox and belt final drive. With a specific output of 53.5 HP per liter and a 1,750 rpm working window between peak torque (3,250 rpm) and peak power (5,000 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Tri Glide Ultra measures 563.8 kg (1243 lbs) wet (curb), translating to a power-to-weight ratio of 0.18 HP/kg (5.64 kg per horsepower). Rider ergonomics and chassis geometry center around a 735 mm (28.9 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,670 mm (65.7 in) wheelbase engineered for planted straight-line stability. The 22.71-liter (6 US gal) fuel tank paired with a rated consumption of 5.6 L/100 km provides an estimated theoretical range of roughly 406 km (252 miles) between fill-ups.
Within MotoLibrary's Harley-Davidson archive, this model family spans 12 indexed model years from 2014 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
53.5 HP/L
Power-to-Weight
0.18 HP/kg (5.64 kg/HP)
Power Band Window
3,250–5,000 rpm
Theoretical Range
~406 km (252 mi)
Engine
Displacement1868.0 ccm (113.99 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsTwin-Cooled™ Milwaukee-Eight® 114
Power100.0 HP (73.0 kW)) @ 5000 RPM
Torque164.1 Nm (16.7 kgf-m or 121.0 ft.lbs) @ 3250 RPM
Compression10.5:1
Bore x Stroke102.0 x 114.3 mm (4.0 x 4.5 inches)
Fuel SystemInjection. Electronic Sequential Port Fuel Injection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingAir
Transmission
Gearbox6-speed
Final DriveBelt (final drive)
ClutchMulti-plate with diaphragm spring in oil bath
DrivelineChain, 34/46 ratio primary drive
Performance
Fuel Consumption5.60 litres/100 km (17.9 km/l or 42.00 mpg)
Greenhouse Gases129.9 CO2 g/km. (CO2 - Carbon dioxide emission)
Exhaust2-1-2 dual exhaust with tapered mufflers
Chassis
Rake26.0°
Trail100 mm (3.9 inches)
Front SuspensionTelescopic fork
Wheelbase1670 mm (65.7 inches)
Ground Clearance125 mm (4.9 inches)
Wheels & Brakes
Front TyreMT90-B16
Rear Tyre205/65-R15
Front BrakesDouble disc. ABS. 6 piston.
Rear BrakesSingle disc. ABS. Integrated park brake.
WheelsBlack, 7-spoke Cast Aluminum. Two rear wheels.
Dimensions & Weight
Dry Weight545.7 kg (1,203.0 pounds)
Weight incl.563.8 kg (1,243.0 pounds)
Power/Weight0.1833 HP/kg
Seat Height735 mm (28.9 inches) If adjustable, lowest setting.
Overall Length2670 mm (105.1 inches)
Fuel Capacity22.71 litres (6.00 US gallons)
Oil Capacity4.70 litres (4.97 US quarts)
Other
StarterElectric
Color OptionsVivid Black, Billiard Red, Deadwood Green/Vivid Black, Gauntlet Grey Metallic/Vivid Black, Snake Venom Green
InstrumentsSpeedometer, tachometer, fuel, and voltage gauges; display features odometer, trip A, trip B, range to empty, gear indicator
LightHigh Beam, running lights, front fender running lights, directional light bar, low oil pressure, engine diagnostics, cruise control, speakers, accessory, security system (optional), 6 speed, low fuel warning, reverse enabled
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.
