At the heart of the 2021 Aprilia Tuono 125 naked motorcycle, Aprilia features a 124.2 cc (7.6 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 15 HP (10.9 kW) at 10,500 rpm while maximum torque reaches 10.9 Nm (8 lb-ft) at 8,250 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 120.8 HP per liter and a 2,250 rpm working window between peak torque (8,250 rpm) and peak power (10,500 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 Tuono 125 measures 144 kg (317 lbs) wet (curb), translating to a power-to-weight ratio of 0.1 HP/kg (9.6 kg per horsepower). Rider ergonomics and chassis geometry center around a 810 mm (31.9 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 14.5-liter (3.8 US gal) fuel tank paired with a rated consumption of 2.71 L/100 km provides an estimated theoretical range of roughly 535 km (332 miles) between fill-ups.
Within MotoLibrary's Aprilia archive, this model family spans 11 indexed model years from 2004 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
120.8 HP/L
Power-to-Weight
0.1 HP/kg (9.6 kg/HP)
Power Band Window
8,250–10,500 rpm
Theoretical Range
~535 km (332 mi)
Engine
Displacement124.2 ccm (7.58 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power15.0 HP (10.9 kW)) @ 10500 RPM
Torque10.9 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 8250 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.
