Street Evolution 125

2021 Mh Street Evolution 125 Technical Analysis & Specification Breakdown

At the heart of the 2021 Mh Street Evolution 125 sport motorcycle, Mh relies on a 125 cc (7.6 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 11 HP (8 kW) at 9,500 rpm while maximum torque reaches 9 Nm (6.6 lb-ft) at 7,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 88 HP per liter and a 2,000 rpm working window between peak torque (7,500 rpm) and peak power (9,500 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the Street Evolution 125 measures 118 kg (260 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (10.73 kg per horsepower). Rider ergonomics and chassis geometry center around a 760 mm (29.9 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,310 mm (51.6 in) wheelbase engineered for quick, flickable steering geometry. The 18-liter (4.8 US gal) fuel tank paired with a rated consumption of 2.2 L/100 km provides an estimated theoretical range of roughly 818 km (508 miles) between fill-ups, while factory top speed is listed at 100 km/h (62 mph).

Within MotoLibrary's Mh archive, this model family spans 3 indexed model years from 2017 to 2021, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.