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MotoLibrary Score
37/100Commuter
Power/Weight
0.13 hp/kg
Top Speed
100 km/h
Torque
15 Nm
Engine
125 ccm
Technical Overview
2016 Black Douglas Sterling MK5 125 Technical Analysis & Specification Breakdown
Engineered by Black Douglas for the classic motorcycle segment, the 2016 Black Douglas Sterling MK5 125 utilizes a 125 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 12.8 HP (9.3 kW) at 7,500 rpm while maximum torque reaches 15 Nm (11.1 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 102.4 HP per liter and a 2,000 rpm working window between peak torque (5,500 rpm) and peak power (7,500 rpm), 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 Sterling MK5 125 measures 95 kg (209 lbs) dry, translating to a power-to-weight ratio of 0.13 HP/kg (7.42 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,500 mm (59.1 in) wheelbase engineered for balanced agility and highway composure. The 9-liter (2.4 US gal) fuel tank paired with a rated consumption of 2.86 L/100 km provides an estimated theoretical range of roughly 315 km (196 miles) between fill-ups, while factory top speed is listed at 100 km/h (62 mph).
Specific Output
102.4 HP/L
Power-to-Weight
0.13 HP/kg (7.42 kg/HP)
Power Band Window
5,500–7,500 rpm
Theoretical Range
~315 km (196 mi)
Engine
Displacement125.0 ccm (7.63 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power12.8 HP (9.3 kW)) @ 7500 RPM
Torque15.0 Nm (1.5 kgf-m or 11.1 ft.lbs) @ 5500 RPM
Bore x Stroke57.0 x 49.0 mm (2.2 x 1.9 inches)
Valves/Cylinder2
Fuel SystemCarburettor
Fuel ControlOverhead Cams (OHC)
IgnitionCDI
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Performance
Top Speed100.0 km/h (62.1 mph)
Fuel Consumption2.86 litres/100 km (35.0 km/l or 82.25 mpg)
Greenhouse Gases66.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Emission DetailsCatalyzed
ExhaustInox steel
Chassis
Front SuspensionHandmade forks, 7075 aluminum
Wheelbase1500 mm (59.1 inches)
Wheels & Brakes
Front Tyre90/90-21
Rear Tyre90/90-21
Front BrakesExpanding brake (drum brake)
Rear BrakesExpanding brake (drum brake)
WheelsBlack, wire spoked
Dimensions & Weight
Dry Weight95.0 kg (209.4 pounds)
Power/Weight0.1342 HP/kg
Overall Length2180 mm (85.8 inches)
Overall Width620 mm (24.4 inches)
Fuel Capacity9.00 litres (2.38 US gallons)
Other
Color OptionsBlack, Dark red
Carrying CapacityRear rack
Warranty2 years
Notes
Retrobike made in Italy. Only available as a kit in the US. Also called The Black Douglas Sterling Countryman 125. A Deluxe version is available.
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.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
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.
