2015 Sym Symphony ST 125 Technical Analysis & Specification Breakdown
Built around Sym's scooter motorcycle platform, the 2015 Sym Symphony ST 125 relies on a 124.6 cc (7.6 cu in) twin, four-stroke powerplant.
On the scales, the Symphony ST 125 measures 122 kg (269 lbs) dry. Rider ergonomics and chassis geometry center around a 1,350 mm (53.1 in) wheelbase engineered for quick, flickable steering geometry. The 7.5-liter (2 US gal) fuel tank paired with a rated consumption of 3.36 L/100 km provides an estimated theoretical range of roughly 223 km (139 miles) between fill-ups.
Within MotoLibrary's Sym archive, this model family spans 3 indexed model years from 2015 to 2024, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Theoretical Range
~223 km (139 mi)
Engine
Displacement124.6 ccm (7.60 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsTwin, four-stroke
Valves/Cylinder2
LubricationWet sump
Transmission
Final DriveBelt (final drive)
Performance
Fuel Consumption3.36 litres/100 km (29.8 km/l or 70.01 mpg)
Greenhouse Gases78.0 CO2 g/km. (CO2 - Carbon dioxide emission)
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.
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.
