NSU 4PS 1921 - Specifications & Review

Step back in time to the roaring 1920s, an era of innovation and the birth of motorcycle culture, when the NSU 4PS burst onto the scene in 1921. As a sporty offering from the renowned German manufacturer NSU, this motorcycle was designed to captivate the hearts of enthusiasts and set the stage for performance in a burgeoning market. With its sleek lines and robust engineering, the 4PS was positioned to appeal to riders who craved both style and the thrill of the open road, making it a beloved classic among collectors and vintage motorcycle aficionados.

At the heart of the NSU 4PS lies its spirited 498cc twin-cylinder, four-stroke engine, producing a respectable 6.5 horsepower at 3,000 RPM. While this power output may seem modest by today’s standards, it translates to an exhilarating top speed of 80 km/h (49.7 mph), allowing riders to enjoy the wind in their hair as they cruise along country roads or urban streets. The engine’s design, featuring a bore and stroke of 63.0 x 80.0 mm, ensures smooth performance and a pleasingly responsive throttle. Paired with a belt final drive and air cooling, the motorcycle delivers a unique blend of simplicity and reliability—a true testament to the craftsmanship of its era.

The NSU 4PS is not just about performance; it also boasts several key features that enhance its riding experience. The steel frame provides a sturdy foundation, contributing to both stability and handling, while the classic Pallas carburettor ensures efficient fuel delivery for those spirited rides. With a fuel capacity of 9 litres (2.38 gallons), this motorcycle is ready for longer journeys, allowing riders to explore without the constant worry of refueling. Finished in a timeless black, the aesthetic appeal of the 4PS complements its performance, making it a striking presence on any road.

Pros:

1. Classic Design: The 1921 NSU 4PS features an iconic, vintage aesthetic that appeals to collectors and enthusiasts alike.
2. Reliable Performance: Its simple yet effective engineering ensures dependable performance and ease of maintenance.
3. Lightweight Construction: At just 120 kg (264.6 pounds), the 4PS offers excellent maneuverability and a nimble riding experience.

Cons:

1. Limited Power Output: With only 6.5 HP, the motorcycle may struggle to keep up with modern traffic conditions.
2. Basic Features: As a motorcycle from the early 20th century, it lacks the advanced technology and comforts found in contemporary models.
3. Fuel Capacity: The 9-litre fuel tank, while adequate for its time, may require more frequent stops during longer rides compared to modern motorcycles.

Whether you are a vintage motorcycle enthusiast or simply appreciate the nostalgia of early 20th-century engineering, the NSU 4PS stands as a remarkable piece of history, embodying the spirit of adventure that defines motorcycling.