What category is the 2016 Black Douglas Sterling Imperial 400?

The 2016 Black Douglas Sterling Imperial 400 has a Category of Prototype / concept model.

What is the engine size of the 2016 Black Douglas Sterling Imperial 400?

The 2016 Black Douglas Sterling Imperial 400 has a Capacity: of 400.00 ccm (24.41 cubic inches).

What type of engine does the 2016 Black Douglas Sterling Imperial 400 have?

The 2016 Black Douglas Sterling Imperial 400 has a Engine type of Single cylinder, four-stroke.

What is the top speed of the 2016 Black Douglas Sterling Imperial 400?

The 2016 Black Douglas Sterling Imperial 400 has a Top speed of 100.0 km/h (62.1 mph).

Is the 2016 Black Douglas Sterling Imperial 400 air cooled or liquid cooled?

The 2016 Black Douglas Sterling Imperial 400 has a Cooling system of Air.

How many gears does the 2016 Black Douglas Sterling Imperial 400 have?

The 2016 Black Douglas Sterling Imperial 400 has a Gearbox of 5-speed.

What is the seat height of the 2016 Black Douglas Sterling Imperial 400?

The 2016 Black Douglas Sterling Imperial 400 has a Seat height of 830 mm (32.7 inches) If adjustable, lowest setting..

Black Douglas Sterling Imperial 400 - 2016 Specifications and Reviews

Name: 2016 Black Douglas Sterling Imperial 400
Brand: Black Douglas

The 2016 Black Douglas Sterling Imperial 400 is a classic-styled cruiser ideal for riders seeking retro aesthetics with practical everyday functionality. Known for its handcrafted solo seat, drum brakes, and air-cooled engine, this bike delivers authentic vintage character. Its manageable 9-liter fuel capacity and comfortable seating suit casual cruisers and heritage motorcycle enthusiasts alike.

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General information
Category	Prototype / concept model
Year	2016
Model	Black Douglas Sterling Imperial 400

Engine and Transmission Specifications
Exhaust system	Inox steel
Transmission type,final drive	Chain
Gearbox	5-speed
Cooling system	Air
Ignition	CDI
Fuel system	Carburettor
Top speed	100.0 km/h (62.1 mph)
Engine type	Single cylinder, four-stroke
Capacity:	400.00 ccm (24.41 cubic inches)
Brakes, suspension, Frame and wheels
Seat	Handmade solo seat with coil springs. Optional passenger seat,
Wheels	Black, wire spoked
Rear brakes	Expanding brake (drum brake)
Front brakes	Expanding brake (drum brake)
Rear tyre	90/90-21
Front tyre	90/90-21
Front Suspension	Handmade forks, 7075 aluminum

Physical measures and capacities
Fuel capacity	9.00 litres (2.38 gallons)
Wheelbase	1,500 mm (59.1 inches)
Overall width	620 mm (24.4 inches)
Overall length	2,180 mm (85.8 inches)
Seat height	830 mm (32.7 inches) If adjustable, lowest setting.
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Carrying capacity	Rear rack
Color options	Any color

Performance Profile & Rider Fit

62.1 mph

Top Speed

Best For

Track5%

City40%

Cornering35%

Daily Riding25%

Touring20%

Passenger25%

Rider Profile

Best For	This is a low-powered, low-speed prototype best suited to riders who value craftsmanship and style over performance, regardless of experience level.
Purpose	Built as a handcrafted concept machine, it's meant for display, short leisurely rides, and showcasing custom bodywork rather than serious transportation.
Rider Fit	A solo drum-braked single with a moderate seat height and minimal weather protection demands a relaxed, undemanding riding posture but offers little in the way of ergonomic support.
Character	It has the soul of an old-world bespoke roadster, prioritizing artisanal detail, retro looks, and rolling sculpture appeal over speed or practicality.
Not Ideal For	This is not for anyone needing highway speeds, long-distance comfort, off-road capability, or modern braking and handling performance.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.