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MotoLibrary Score
34/100Commuter
Power/Weight
0.09 hp/kg
Engine
125 ccm
Technical Overview
2011 Sym HD Evo 125i Technical Analysis & Specification Breakdown
Engineered by Sym for the scooter motorcycle segment, the 2011 Sym HD Evo 125i relies on a 124.5 cc (7.6 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 12.5 HP (9.1 kW) at 8,500 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 100.4 HP per liter, 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 HD Evo 125i measures 142 kg (313 lbs) wet (curb), translating to a power-to-weight ratio of 0.09 HP/kg (11.36 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,385 mm (54.5 in) wheelbase engineered for quick, flickable steering geometry. The 8-liter (2.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
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.
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.
