Naked bike · 2008
DY 125-8B
MotoLibrary Score
35 /100 Commuter
Power/Weight
0.05 hp/kg
Top Speed
90 km/h
Engine
125 ccm
Technical Overview
2008 Dayun DY 125-8B Technical Analysis & Specification Breakdown
Engineered by Dayun for the naked motorcycle segment, the 2008 Dayun DY 125-8B utilizes a 125 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 6.9 HP (5 kW) at 7,500 rpm. With a specific output of 55.2 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the DY 125-8B measures 127 kg (280 lbs) dry, translating to a power-to-weight ratio of 0.05 HP/kg (18.41 kg per horsepower).
Specific Output
55.2 HP/L
Power-to-Weight
0.05 HP/kg (18.41 kg/HP)
Engine
Displacement 125.0 ccm (7.63 cubic inches)
Engine Type Single cylinder, four-stroke
Engine Details Single cylinder, four-stroke
Power 6.9 HP (5.0 kW)) @ 7500 RPM
Fuel System Carburettor
Cooling Air
Performance
Top Speed 90.0 km/h (55.9 mph)
Dimensions & Weight
Dry Weight 127.0 kg (280.0 pounds)
Power/Weight 0.0543 HP/kg
Overall Height 1080 mm (42.5 inches)
Overall Length 2010 mm (79.1 inches)
Overall Width 740 mm (29.1 inches)
Other
Color Options Black
Notes
Chinese made bike.
More from Dayun
Rider Profile
Who Is This Bike For?
🟢
Beginner
A2 license compatible, manageable power.
🏍️
Best For
City & Weekend Rides
⚖️
Handling
Very lightweight — easy to handle
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