The Derringer Cycles as a company is a cross between a 1920s board track motorcycle and a pure and simple good oldfashioned bike. The magnificent and completely handmade Derringer Cycle with hand-riveted leather Brooks seats was born. One that just like in the old times, can be pedaled like an ordinary bike. But the trick is that one can also ride it like a motorcycle.

TECHNICAL SPECIFICATIONS
Engine: Honda built overhead valve 4-stroke engine displacing 49cc, CARB and EURO 2 emission compliance, up to 180 mpg depending on usage.Brakes: 70mm drum front brake, coaster style rear brake.
Capacity: Fuel Tank 1.8 US Gallon, 87 Octane 
Engine Oil: .26 US Quart
Performance: Top speed for off-road only models can exceed 35 mph. Derringers designated for road use are modified so as not to exceed the power and speed limitations imposed on motorized bicycles by the laws of the region in which they will operate. This can vary from 20 mph to 40mph depending on city, state, or country.

Via Yatzer.