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Imperia Fahrzeugwerke GMBH was a lesser-known but historically interesting German engineering company involved in the early development of motorcycles during the first decades of the twentieth century. Operating during a period of rapid innovation in the German vehicle industry, the company contributed to the evolution of motorcycle engineering through experimentation, mechanical refinement, and small-scale production.
Founded by Jakob Becker, Imperia quickly became known for producing a wide range of motorcycles, from practical road machines to highly competitive racing motorcycles. Despite its relatively short existence, the company achieved significant success in motorcycle racing, particularly in the 350cc class.
This German Imperia company should not be confused with the Belgian Imperia manufacturer. Although they shared the same name, the two companies were entirely separate entities with different histories and engineering focus.
| Model | Production Years | Engine Type | Capacity | Power | Category |
|---|---|---|---|---|---|
| J I | 1925 | Single-cylinder, 4-stroke | 350cc | 9 HP | Road |
| 350 B | 1925 | Single-cylinder (Bradshaw OHV), 4-stroke | 350cc | 10 HP | Road |
| BS | 1925 | Single-cylinder, 4-stroke | 350cc | 14 HP | Sport |
| J II | 1925 | Single-cylinder, 4-stroke | 500cc | 15 HP | Touring |
| M I | 1925 | V-twin, 4-stroke | 500cc | 16 HP | Touring |
| MAG 496 OHV Models | 1926-1935 | Single-cylinder (MAG OHV), 4-stroke | 496cc | 22 HP | Touring / Sport |
| Berggeist | 1929-1930 | Single-cylinder (MAG), 4-stroke | 595cc | 15 HP | Touring |
| 500 H Sport | 1929-1931 | Single-cylinder (MAG), 4-stroke | 496cc | 22 HP | Sport |
| Junior 200 | 1931-1933 | Single-cylinder (Omnia / Villiers), 2-stroke | 200cc | 6 HP | Lightweight |
| Grand Prix | 1932 | Single-cylinder (Rudge Python, 4-valve), 4-stroke | 350cc | 18-20 HP | Racing |
| Imperia 200 / Junior 200 (Bark) | 1933-1935 | Single-cylinder (Bark), 4-stroke | 200cc | 8-10 HP | Lightweight |
| Zwerg 150 | 1933 | Single-cylinder (Villiers), 2-stroke | 150cc | 3 HP | Lightweight |
| 350 H Sport | 1933 | Single-cylinder (MAG), 4-stroke | 350cc | 15 HP | Sport |
| 350 B Sport | 1934 | Single-cylinder (Bark), 4-stroke | 350cc | 15 HP | Sport |
Imperia Fahrzeugwerk GmbH was founded on April 4, 1924, by Jakob Becker in Koln-Kalk, Germany. The original company, Imperia-Werk Motorradbau GmbH, operated from Wipperfurther Strabe and was supported by associated distribution companies based in Cologne.
Despite an ambitious start, the company faced financial difficulties and declared bankruptcy in 1925. In 1926, the business was acquired by the Schrodter brothers, Felix and Rolf Schrodter, who reorganized the company and relocated production to Bad Godesberg under a new corporate structure.
It is important to note that this company had no connection to the similarly named Cologne-based Kolner Motorrad- und Maschinenbau (KMB) and was not a successor to that firm.
The first range of Imperia motorcycles introduced in 1925 included a variety of single-cylinder and V-twin models. These motorcycles covered different market segments, from lightweight road bikes to more powerful touring machines.
Engines were sourced both internally and from external suppliers such as Bradshaw, reflecting the common industry practice of the time. These early models established the foundation of the Imperia brand in the German motorcycle market.
From 1926 onward, many Imperia motorcycles were equipped with engines supplied by MAG (Motosacoche), a respected Swiss engine manufacturer. These overhead-valve engines, particularly the 496cc unit producing approximately 22 horsepower, became a core component of Imperia's lineup.
Motorcycles such as the 500 H Sport and other MAG-powered models offered strong performance and reliability, making them suitable for both touring and sporting use.
During the early 1930s, Imperia expanded into the lightweight motorcycle segment. Models such as the Junior 200 and Zwerg 150 used engines from suppliers like Villiers and Omnia.
These motorcycles were economical and accessible, reflecting the increasing demand for affordable transportation during the interwar period.
One of the most important aspects of Imperia's history was its success in motorcycle racing. The company achieved its greatest recognition in the 350cc class using high-performance Python engines supplied by Rudge.
These engines featured advanced design elements such as four-valve cylinder heads, providing excellent performance for competition use.
Riders including Ernst Loof, Hein Thorn Prikker, Otto Schanz, Heinrich Berhausen, Josef Putz, Adam Schumacher, and Arthur Dom achieved significant success on Imperia motorcycles.
Ernst Loof won the German National Motorcycle Road Championship multiple times in the 350cc category and also secured several victories at the famous Eifelrennen held at the Nurburgring, competing in both solo and sidecar classes.
In the early 1930s, changing political and economic conditions disrupted the supply of British racing engines. When Rudge ceased supplying Python engines, Imperia was forced to develop its own power units.
The company designed a 348cc two-stroke racing engine and a 498cc two-stroke sport engine. These projects demonstrated significant technical ambition but required substantial financial resources.
Ultimately, the cost of development exceeded the company's capabilities.
In 1934 and 1935, Imperia briefly expanded into automobile development. The company produced small prototype cars featuring two-seat coupe bodies and rear-mounted three-cylinder radial engines with approximately 750cc displacement.
These vehicles were presented publicly, including at the Berlin Motor Show in 1935, but never entered mass production.
Due to financial limitations and the broader economic and political environment of the 1930s, Imperia Fahrzeugwerk GmbH ceased operations in 1935. The combination of rising development costs and the loss of key engine suppliers made continued production unsustainable.
Although short-lived, Imperia made a meaningful contribution to German motorcycling. Its racing successes, particularly in the 350cc class, demonstrated the performance potential of its machines.
Today, Imperia motorcycles are extremely rare and are highly valued by collectors interested in unusual and historically significant German manufacturers.
The company remains an example of the many smaller but innovative manufacturers that helped shape the development of motorcycles during the interwar period.
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