All NSU Models 1921 Motorcycles
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NSU 4 PS

1921

Year1921
MakeNSU
Displacement498.0 ccm (30.39 cubic inches)
NSU 4 PS - No Image Available
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Review

The NSU 4 PS, introduced in 1921, represents a significant early entry in motorcycle history. Produced in Germany, this model emerged during a period of rapid development in motorcycle engineering. The 4 PS aimed to provide reliable transportation to a growing market. Competitors at the time included machines like the Wanderer 500cc, which also sought to capture the attention of consumers seeking personal motorized transport.

Powering the NSU 4 PS is a 498.0 ccm (30.39 cubic inches) engine, designed for dependable operation. This single-cylinder powerplant provided enough oomph to reach a top speed of 80.0 km/h (49.7 mph), suitable for the road conditions of the era. With a weight of 120.0 kg (264.6 pounds), the motorcycle was relatively manageable for its time. The fuel tank capacity was 9.00 litres (2.38 US gallons), offering a reasonable range before refueling was necessary. It was engineered for efficiency and durability, reflecting the priorities of early motorcycle design.

While information regarding the specific riding characteristics of the 1921 NSU 4 PS is scarce, we can infer some likely traits based on the era and design. Expect an upright riding position, typical of motorcycles from this period, prioritizing visibility and control over aerodynamics. Suspension technology was rudimentary, so the ride would likely be firm, requiring active rider input to navigate uneven surfaces. Controls would be basic, demanding a degree of mechanical sympathy from the rider. It was designed for function over form, an era before the modern definition of comfort was born.

The NSU 4 PS of 1921 was aimed at individuals seeking a practical and affordable means of transportation. Farmers, tradesmen, and those seeking an alternative to public transport or bicycles would have been the primary target audience. The machine offered a step up in speed and convenience. Today, the NSU 4 PS is a valuable piece of motorcycle history, appealing to collectors and enthusiasts interested in the origins of motorized personal transport. It is a window into a bygone era of simple engineering and practical design.

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Pros (Advantages)

✅ Why buy this bike?

• Pioneering Design: As an early motorcycle, it showcases innovative engineering for its time, representing a significant step in motorcycle development. • Simple Mechanics: The relatively basic engine design makes it easier to understand, maintain, and repair compared to more complex, modern machines. • Historical Significance: Owning an NSU 4 PS grants a tangible connection to early motorcycle history, appealing to collectors and enthusiasts. • Lightweight Handling: Compared to later, heavier motorcycles, its lighter weight likely offered reasonably nimble handling for the era's road conditions. • Collectible Value: Well-preserved or restored examples can be quite valuable to collectors, making it a potentially appreciating asset. • Unique Aesthetic: Its vintage appearance provides a distinct and eye-catching presence, setting it apart from contemporary motorcycles.
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Cons (Disadvantages)

⚠️ Things to consider

• Limited Performance: Its 4 PS engine offers very limited power and speed compared to modern motorcycles, unsuitable for modern traffic. • Primitive Suspension: The suspension technology of 1921 is rudimentary, resulting in a harsh ride, especially on uneven surfaces. • Unreliable Brakes: Early braking systems were often ineffective, requiring significant stopping distance and careful riding. • Spare Parts Scarcity: Finding original or reproduction spare parts can be extremely difficult and expensive, hindering restoration and maintenance. • Maintenance Demands: Requires frequent and meticulous maintenance due to the age and simplicity of the technology, demanding significant owner involvement.
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License Class (EU)

Rule of thumb: under 125cc / 15HP → A1, under 47HP → A2, above → A.

Fuel Economy & Running Costs

Estimated average for 498cc class: 45-60 mpg (4.0-5.5 L/100km)

⛽ Tank: 9.00 litres (2.38 US gallons)

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Insurance Class

Insurance grouping for NSU 4 PS (498cc):

  • 📋 Group 8-15 — mid-range
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    Insurance Calculator (UK est.)

    Personalised premium estimate for the NSU 4 PS (UK rates):

    💡 Estimate based on UK market averages. For real quotes, compare on Compare the Market, MoneySuperMarket, GoCompare.

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    Buy New & Used

    Find new and used NSU 4 PS 1921 listings:

    💡 Third-party listings. MotoBike Info is informational only.

  • 👤 Final premium varies by rider age, history, location.
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