MT-15

2021 Yamaha MT-15 Technical Analysis & Specification Breakdown

At the heart of the 2021 Yamaha MT-15 naked motorcycle, Yamaha utilizes a 155 cc (9.5 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 18.2 HP (13.3 kW) at 10,000 rpm while maximum torque reaches 13.9 Nm (10.3 lb-ft) at 8,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 117.4 HP per liter and a 1,500 rpm working window between peak torque (8,500 rpm) and peak power (10,000 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 MT-15 measures 138 kg (304 lbs) wet (curb), translating to a power-to-weight ratio of 0.13 HP/kg (7.58 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 1,335 mm (52.6 in) wheelbase engineered for quick, flickable steering geometry. The 10-liter (2.6 US gal) fuel tank paired with a rated consumption of 2.13 L/100 km provides an estimated theoretical range of roughly 469 km (291 miles) between fill-ups.

Within MotoLibrary's Yamaha archive, this model family spans 4 indexed model years from 2020 to 2023, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.