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NSU 2.5 Hp

Make Model	NSU 2.5 Hp
Year	1903-05
Engine	Single cylinder, 4 stroke
Capacity	331 cc / 20.2 cub in
Cooling	Air cooled
Ignition	Magneto
Starting	Bicycle type pedal
Max Power	1.8 kW / 2.5 hp @ 2000 rpm
Final Drive	Chain
Frame	Steel, integrated open frame with engine as integral component
Top Speed	50 km/h / 31 mph

The NSU motorcycle was powered by an engine developed by the company itself. Engine production facilities were set up at the factory in Neckarsulm. In the 2.5 hp motorcycle, the engine was not suspended as a purchased part, but was rather used as an integrated component in an open frame. The 1-cylinder engine featured an automatic inlet valve and mixture regulation.