Simson S51 B1-4 - 1980 Specifications and Reviews
The Simson S51 B1-4 is a lightweight 50cc allrounder designed for everyday commuting and learner riders. Its reliable single-cylinder two-stroke engine with electronic ignition delivers modest performance in a nimble 78.5kg package. Best known for practical simplicity and East German durability, it became an iconic entry-level motorcycle across Europe.
1980
Engine and Transmission Specifications | |
| Transmission typefinal drive | Chain |
| Gearbox | 4-speed |
| Cooling system | Air |
| Starter | Kick |
| Ignition | Electronic |
| Fuel system | Carburettor |
| Power | 3.70 |
| Stroke | 2 |
| Engine type | Single cylinder |
| Capacity: | 49.80 ccm (3.04 cubic inches) |
| | |
Physical measures and capacities | |
| Dry weight | 78.5 kg (173.1 pounds) |
Simson S51 B1-4 dimensions and frame | |
| Rear brakes | Expanding brake (drum brake) |
| Front brakes | Expanding brake (drum brake) |
| Frame type | Steel Frame |
Speed and acceleration | |
| Power/weight ratio | 0.0471 HP/kg |
| Top speed | 60.0 km/h (37.3 mph) |
| Category | Allround |
| Year | 1980 |
| Model | Simson S51 B1-4 |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Color options | Red, Yellow, Acid-Green, Dark-Green, Black, Sky-Blue, Navy |
| Reserve fuel capacity | 0.70 litres (0.18 gallons) |
| Fuel capacity | 8.70 litres (2.30 gallons) |
Performance Profile & Rider Fit
3.7 hp
Peak Power
37.3 mph
Top Speed
Best For
Track2%
City55%
Cornering20%
Daily Riding35%
Touring8%
Passenger15%
Rider Profile
| Best For | Ideal for absolute beginners, young riders, or anyone wanting a simple, low-stakes introduction to motorised two-wheelers. |
| Purpose | Built as a lightweight, low-powered moped for short, low-speed trips around town rather than any kind of performance riding. |
| Rider Fit | Very light and easy to handle, requiring minimal strength or experience to manage at a standstill or low speeds. |
| Character | A charmingly basic, no-frills classic East German moped with modest performance and simple mechanicals. |
| Not Ideal For | Not suitable for highway travel, long-distance touring, carrying a passenger comfortably, or anyone seeking speed or excitement. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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Rider Reviews
Total comments: 1

MotorcycleDB Review
The 1980 Simson S51 B1-4 is a classic East German motorcycle known for its quality construction and reliable performance. This two-stroke, single-cylinder bike is equipped with a 50cc engine and a four-speed manual transmission, making it ideal for city commuting and short trips. The S51 B1-4 also features a sturdy chassis, comfortable seating, and smooth handling, making it a desirable choice for vintage motorcycle enthusiasts. Overall, the 1980 Simson S51 B1-4 is a superb choice for anyone seeking a well-built, reliable vintage motorcycle. Its compact size, efficient engine, and classic design make it a practical and stylish choice for urban riding. Whether you're a collector or a rider looking for a unique and dependable bike, the Simson S51 B1-4 is sure to leave a lasting impression.Add a Comment
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