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NSU 2.5 hp motorcycle, 1903

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.

Engine: 1-cylinder, 4-stroke
Displacement: 331 cc
Power: 2.5 hp at 2,000 rpm
Maximum speed: 50 km/h
Series: 1903-1905

NSU 1.75 hp motorcycle, 1902 NSU Sulmobil, 1905