Engineered by Yamaha for the scooter motorcycle segment, the 2021 Yamaha Tricity 155 utilizes a 155 cc (9.5 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 14.9 HP (10.9 kW) at 8,000 rpm while maximum torque reaches 14.4 Nm (10.6 lb-ft) at 6,000 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 96.1 HP per liter and a 2,000 rpm working window between peak torque (6,000 rpm) and peak power (8,000 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the Tricity 155 measures 165 kg (364 lbs) wet (curb), translating to a power-to-weight ratio of 0.09 HP/kg (11.07 kg per horsepower). Rider ergonomics and chassis geometry center around a 780 mm (30.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,350 mm (53.1 in) wheelbase engineered for quick, flickable steering geometry. The 7.2-liter (1.9 US gal) fuel tank paired with a rated consumption of 2.52 L/100 km provides an estimated theoretical range of roughly 286 km (178 miles) between fill-ups.
Within MotoLibrary's Yamaha archive, this model family spans 5 indexed model years from 2018 to 2023, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
96.1 HP/L
Power-to-Weight
0.09 HP/kg (11.07 kg/HP)
Power Band Window
6,000–8,000 rpm
Theoretical Range
~286 km (178 mi)
Engine
Displacement155.0 ccm (9.46 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power14.9 HP (10.9 kW)) @ 8000 RPM
Torque14.4 Nm (1.5 kgf-m or 10.6 ft.lbs) @ 6000 RPM
Compression10.5:1
Bore x Stroke58.0 x 58.7 mm (2.3 x 2.3 inches)
Valves/Cylinder4
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionTCI
LubricationWet sump
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
DrivelineV-Belt Automatic
Performance
Fuel Consumption2.52 litres/100 km (39.7 km/l or 93.34 mpg)
Greenhouse Gases58.5 CO2 g/km. (CO2 - Carbon dioxide emission)
Emission DetailsEU4 compliant
Chassis
Frame TypeUnderbone, steel
Front SuspensionTelescopic fork
Front Travel90 mm (3.5 inches)
Rear SuspensionUnit Swing
Rear Travel90 mm (3.5 inches)
Wheelbase1350 mm (53.1 inches)
Ground Clearance125 mm (4.9 inches)
Wheels & Brakes
Front Tyre90/80-14
Rear Tyre130/70-13
Front BrakesSingle disc. Unified Brake System. ABS.
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.
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.
