The Vintage Motorcycles
Specialists in antique, classic, veteran and vintage motorcycles.
Specialists in antique, classic, veteran and vintage motorcycles.
The 1929 Imperia 500 H is a distinctive German sporting motorcycle from the late 1920s and one of the most important models produced by Imperia during its early period. Factory references identify the machine as the 500 H Sport, a 500 cc single-cylinder motorcycle developed around a M.A.G. overhead-valve engine and designed with sporting performance in mind.
The 500 H uses a 492.96 cc single-cylinder, four-stroke M.A.G. engine with overhead valves, an 82 mm bore and 94 mm stroke. The engine was rated at approximately 22 horsepower and was paired with a three-speed Hurth transmission.
Its open single-tube frame, Tiger parallelogram front fork, relatively lightweight construction, and sporting chassis gave the Imperia a purposeful appearance and strong road performance for its era.
The 500 H was part of Imperia's concentrated 1929 model range. During this period, the company significantly reduced its motorcycle lineup and focused on the Sport 500, offered in standard and luxury forms. The model became one of the best-known motorcycles associated with the Imperia name.
Imperia developed its motorcycles in Germany and became particularly associated with sporting machines during the 1920s and early 1930s.
The company had operated in Cologne before relocating its activities to Bad Godesberg. By 1929, Imperia had significantly streamlined its range and concentrated on the 500 cc Sport model.
The 500 H Sport used the M.A.G. overhead-valve engine and represented a considerable step toward higher-performance motorcycle design compared with earlier Imperia machines.
Contemporary and historical references identify the 500 H as a 1928/29 model, with production continuing into the following period under closely related specifications. The model is commonly associated with the 1929 Imperia Sport 500 range.
Historical documentation lists the 1929 Sport 500 H with a M.A.G. OHV engine producing approximately 22 horsepower. The motorcycle was offered at a listed price of approximately 1,295 Reichsmark in standard form, with higher pricing for equipped and luxury versions.
The luxury version could include features such as a nickel-plated tank, twist-grip throttle, and deeper-section rims, demonstrating that Imperia offered different levels of equipment within the Sport 500 range.
Surviving examples are rare today, and provenance can be established through frame and engine numbers, original registration documents, period photographs, ownership records, restoration documentation, and surviving factory literature.
The Imperia 500 H is powered by a M.A.G. single-cylinder, four-stroke engine with overhead-valve operation.
The engine has a displacement of approximately 492.96 cc, with an 82 mm bore and 94 mm stroke.
Historical specifications commonly give an output of approximately 22 horsepower at around 5,000 rpm.
The M.A.G. engine was one of the defining components of the 500 H and gave the motorcycle a strong sporting character for the late 1920s.
The overhead-valve configuration allowed the engine to breathe more effectively than many simpler side-valve designs of the period and contributed to the model's relatively high power output.
The long 94 mm stroke also reflects the engineering philosophy of the period, providing substantial low- and mid-range torque while maintaining the characteristic appearance of a large-capacity single-cylinder engine.
Historical references list a maximum speed of approximately 120 km/h, although actual performance depends on gearing, engine condition, rider weight, road conditions, and the mechanical condition of an individual surviving motorcycle.
The 500 H uses a three-speed Hurth gearbox.
The gearbox is operated by a hand shift mechanism positioned on the right side of the fuel tank on documented examples.
Historical specifications also describe a combination of hand and foot clutch operation, reflecting the mechanical arrangements used on some motorcycles of the period.
The three-speed transmission was appropriate for the strong torque characteristics of the 500 cc single-cylinder engine.
Power is transmitted to the rear wheel through a conventional motorcycle final-drive chain.
The gearbox, clutch, primary drive, chain, sprockets, and rear hub should all be inspected carefully when evaluating a surviving 500 H, particularly because replacement parts and later modifications can alter the original mechanical configuration.
The Imperia 500 H uses an open single-tube frame that contributes to the motorcycle's light and sporting appearance.
The front suspension is based on a Tiger parallelogram fork associated with the Cologne-Lindenthaler Metallwerke.
The parallelogram fork was a characteristic solution of the era and uses a linkage arrangement to control movement of the front wheel.
A steering damper, identified in historical descriptions as a Carmen steering damper or Flatterbremse, was fitted to improve stability and reduce unwanted steering oscillation.
The chassis was designed for sporting road use and was intended to provide stability at the relatively high speeds available from the 22 horsepower engine.
On a restored motorcycle, the frame should be inspected for cracks, distortion, corrosion, previous repairs, and modifications.
The front fork, steering bearings, spring components, steering damper, wheel alignment, and rear suspension should also be checked carefully before road use.
The 500 H uses conventional wire-spoked motorcycle wheels appropriate to its late-1920s design.
The luxury version of the Sport 500 could be equipped with deeper-section 27 x 4 inch rims according to historical model references.
Period braking equipment was mechanical rather than hydraulic, with drum-type braking systems operated through mechanical controls.
The exact brake specification can vary according to production configuration and surviving equipment, so individual motorcycles should be evaluated against period documentation.
Brake drums, shoes, cables, operating mechanisms, wheel bearings, spokes, rims, and tires should be inspected carefully on any surviving motorcycle.
Because the 500 H was capable of approximately 120 km/h according to period specifications, maintaining the braking system in correct working condition is especially important.
The Imperia 500 H has the unmistakable appearance of a late-1920s German sporting motorcycle.
The exposed single-cylinder engine is mounted prominently within the open frame, emphasizing the mechanical character of the machine.
The large fuel tank, tubular chassis, external controls, wire wheels, and exposed mechanical components create a purposeful sporting appearance.
The M.A.G. engine is particularly visually important because its large single-cylinder architecture dominates the center of the motorcycle.
The Tiger parallelogram fork gives the front end a distinctive period appearance while the steering damper adds another characteristic detail.
The overall design avoids unnecessary bodywork and instead emphasizes the mechanical components, which was typical of performance motorcycles of the late 1920s.
The 1929 Imperia 500 H belongs to the period when Imperia concentrated its motorcycle production around the Sport 500.
Historical model listings identify the 500 H Sport as a 500 cc, 22 horsepower, single-cylinder, four-stroke motorcycle using a M.A.G. OHV engine with an 82 mm bore and 94 mm stroke.
The motorcycle used a three-speed transmission and was offered in standard and luxury configurations.
The standard Sport 500 H was listed at approximately 1,295 Reichsmark, while a version equipped with lighting, Bosch horn, and a speedometer integrated into the tank was listed at approximately 1,500 Reichsmark.
The 500 H Sport Luxus was listed at approximately 1,600 Reichsmark and could include additional equipment such as a nickel-plated tank, twist-grip throttle, and deeper-section rims.
These period equipment differences are important when evaluating the originality of an individual 1929 motorcycle.
The Imperia 500 H was developed as a sporting motorcycle rather than a basic utility machine.
The 22 horsepower M.A.G. engine provides substantially more performance than many smaller motorcycles of the period.
The long-stroke single-cylinder configuration produces a strong torque character while the three-speed transmission provides the gearing necessary for both acceleration and sustained road speed.
The open frame and Tiger parallelogram fork provide the motorcycle with a distinctly mechanical riding character typical of late-1920s machines.
The steering damper was an important feature for maintaining stability, particularly at higher speeds.
Modern riders should remember that the braking, suspension, tires, lighting, and chassis technology are more than ninety years old and should not be compared directly with modern motorcycles.
The Imperia 500 H is historically significant because it represents the company's move toward a concentrated, high-performance motorcycle range during the late 1920s.
By 1929, Imperia had reduced its model range considerably and focused its efforts on the Sport 500.
The use of a M.A.G. OHV engine producing approximately 22 horsepower placed the 500 H firmly within the sporting motorcycle category of its period.
The motorcycle also demonstrates the international nature of motorcycle engineering during the 1920s. Although Imperia was a German manufacturer, the 500 H relied on a M.A.G. engine from Motosacoche in Geneva, Switzerland.
The combination of German chassis engineering and Swiss engine technology created a distinctive machine with strong performance credentials.
The model is now an important representative of the German motorcycle industry during the period immediately before the 1930s economic and technological changes transformed the market.
The Imperia 500 H is a rare and highly interesting motorcycle for collectors of early German motorcycles.
Its limited survival, M.A.G. OHV engine, sporting specification, and distinctive late-1920s engineering make original examples particularly significant.
Collectors should pay close attention to the frame, engine, gearbox, fuel tank, Tiger fork, steering damper, wheels, controls, lighting equipment, carburetor, exhaust, and period fittings.
Matching or appropriately documented frame and engine numbers can provide important evidence of authenticity.
Original factory equipment is particularly valuable because many motorcycles from this era were modified, rebuilt, or updated during their long service lives.
Period Bosch lighting equipment, original tank fittings, correct controls, factory-standard wheels, and documented M.A.G. engine components can all strengthen the historical authenticity of an example.
A sympathetic restoration using period-correct components can preserve the historical character of the 500 H, while an over-restored motorcycle with modern replacement components may lose important evidence of its original specification.
Authenticating a 1929 Imperia 500 H requires careful examination of the frame, engine, gearbox, suspension, fuel tank, controls, and historical documentation.
The motorcycle should be identified as the 500 H Sport rather than simply a generic Imperia 500, because Imperia produced several different 500 cc models during its history.
The M.A.G. engine should correspond to the 500 H's 492.96 cc OHV specification with an 82 mm bore and 94 mm stroke.
The three-speed Hurth gearbox, Tiger parallelogram fork, steering damper, open frame, and period equipment should be examined for consistency with the 1929 specification.
Frame and engine numbers should be recorded and compared with reliable Imperia and M.A.G. references.
Original documentation, registration records, period photographs, factory literature, and long-term ownership records can provide additional evidence of authenticity.
Because individual motorcycles could be repaired and updated throughout their working lives, originality should be evaluated component by component rather than based solely on overall appearance.
The 1929 Imperia 500 H matters because it represents one of the most interesting sporting motorcycles produced by Imperia during the late 1920s.
The combination of a 492.96 cc M.A.G. OHV single-cylinder engine, approximately 22 horsepower, three-speed Hurth transmission, open frame, Tiger parallelogram fork, and sporting chassis gave the motorcycle a strong performance identity for its time.
It also illustrates the international character of motorcycle engineering, combining German Imperia chassis development with a Swiss M.A.G. powerplant.
For collectors, the 500 H provides an important glimpse into the development of high-performance motorcycles immediately before the technological changes of the 1930s.
A surviving example with correct M.A.G. engine components, original frame, period-correct equipment, documented provenance, and sympathetic restoration is particularly desirable.
This 1929 Imperia 500 H represents one of the most distinctive sporting motorcycles produced by Imperia during the late 1920s.
The approximately 493 cc M.A.G. single-cylinder OHV engine produces around 22 horsepower and is paired with a three-speed Hurth transmission, giving the motorcycle impressive performance for its period.
The open single-tube frame, Tiger parallelogram front fork, steering damper, wire wheels, and exposed mechanical components create the characteristic appearance of a late-1920s German sporting motorcycle.
The 500 H was central to Imperia's concentrated 1929 Sport 500 range and was offered in standard and luxury configurations with different levels of equipment.
For collectors, the M.A.G. engine, frame and engine numbers, Hurth gearbox, Tiger fork, original fuel tank, period controls, lighting equipment, and documented history are particularly important when establishing authenticity.
A well-preserved or accurately restored 1929 Imperia 500 H with correct mechanical components, period-correct equipment, and strong provenance represents a significant example of early German motorcycle engineering.
For more information about the Imperia marque and its historic motorcycles, visit Imperia vintage motorcycles.
Contact us for additional photographs, detailed specifications, frame and engine numbers, service history, originality assessment, provenance, restoration information, historical documentation, and purchasing information for this 1929 Imperia 500 H.
The Vintage Motorcycles presents a curated selection of historically significant German motorcycles, with a dedicated focus on Imperia Fahrzeugwerk GmbH, a lesser-known but technically interesting contributor to early German motorcycle engineering. Emerging during a period of intense industrial development in Germany, Imperia reflects an engineering mindset centered on precision construction, functional design, and practical road usability in the early 20th century.
This collection is part of a wider historical archive of global motorcycle manufacturers, accessible through our global vintage motorcycle brands archive, where German engineering is positioned alongside British, French, American, and Belgian developments. Within this comparative framework, Imperia represents the more understated but structurally disciplined side of German industrial design. These machines are best understood within the context of pre-war motorcycle engineering (1900-1939), a formative period that defined the mechanical foundations of modern motorcycling across Europe.
Each motorcycle within our collection is selected based on provenance, originality, and mechanical authenticity, ensuring alignment with museum-grade preservation standards. Available machines can be explored through our global vintage motorcycle inventory, including early European engineering examples that reflect transitional mechanical design philosophies. All acquisitions are supported by a fully insured international shipping service, ensuring secure global delivery for collectors and institutions.
German motorcycle engineering developed through a strong industrial foundation emphasizing precision, mechanical discipline, and structural efficiency. Within this environment, Imperia contributed to the broader ecosystem of early manufacturers that prioritized functional design and reliable construction over stylistic excess. These motorcycles reflect a transitional phase in which engineering principles were being standardized across the rapidly evolving European industry.
This evolution can be better understood within the wider historical context of global motorcycle development, beginning with the experimental foundations of the pre-war era, when manufacturers across Europe were still defining core mechanical architectures. During World War II, engineering priorities shifted toward durability and operational reliability, as reflected in military motorcycle development. Following this period, motorcycle production entered a phase of industrial standardization and mass manufacturing, documented in post-war motorcycle evolution, which further refined the engineering foundations established by early German manufacturers like Imperia.
Key Highlights
Collector Assurance
All enquiries handled with discretion. We typically respond within 6 hours.
Choose the payment method that is most convenient for you. We accept widely used international payment methods as well as, where available, local bank transfer options that allow you to pay like a domestic transaction. Full payment instructions are provided for your specific purchase.
Direct international bank wire transfer is available for motorcycle purchases and export transactions.
Credit card payments can be arranged through Wise.com, subject to the applicable payment and processing conditions.
PayPal is accepted. A 5% PayPal processing fee applies to the transaction.