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Scooter · 2010

HD Evo 125

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MotoLibrary Score
34 /100 Commuter
Power/Weight
0.09 hp/kg
Engine
125 ccm

2010 Sym HD Evo 125 Technical Analysis & Specification Breakdown

Built around Sym's scooter motorcycle platform, the 2010 Sym HD Evo 125 utilizes a 124.5 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. 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 125 measures 135 kg (298 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (10.8 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.

Within MotoLibrary's Sym archive, this model family spans 2 indexed model years from 2008 to 2010, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.

Specific Output
100.4 HP/L
Power-to-Weight
0.09 HP/kg (10.8 kg/HP)
Engine
Displacement 124.5 ccm (7.60 cubic inches)
Engine Type Single cylinder, four-stroke
Engine Details Single cylinder, four-stroke
Power 12.5 HP (9.1 kW)) @ 8500 RPM
Compression 10.5:1
Valves/Cylinder 4
Fuel System Carburettor
Cooling Air
Transmission
Gearbox Automatic
Final Drive Belt (final drive)
Chassis
Front Suspension Telescopic Fork
Rear Suspension Unit Swing Arm
Wheelbase 1385 mm (54.5 inches)
Wheels & Brakes
Front Tyre 100/80-16
Rear Tyre 120/80-16
Front Brakes Single disc
Front Brake Ø 220 mm (8.7 inches)
Rear Brakes Expanding brake (drum brake)
Rear Brake Ø 130 mm (5.1 inches)
Dimensions & Weight
Dry Weight 135.0 kg (297.6 pounds)
Power/Weight 0.0926 HP/kg
Overall Height 1165 mm (45.9 inches)
Overall Length 2064 mm (81.3 inches)
Overall Width 706 mm (27.8 inches)
Fuel Capacity 8.00 litres (2.11 US gallons)
Other
Starter Electric
Color Options Gray, white
Notes

Made in Taiwan.

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Before You Compare This Bike

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.
Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🏙️
Best For
City & Commuting
⚖️
Handling
Manageable weight for most riders
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