Zweirad-Union RT 125 E
1973Allround

Zweirad-Union RT 125 E

Key specifications

Engine
124 cc
Power
17 HP
Fuel type
petrol
Fuel capacity
2.8 L
Transmission
6-speed
Front brakes
Expanding brake
Rear brakes
Expanding brake

Overview

Introducing the 1973 DKW RT 125 E, a quintessential model that epitomizes the spirit of the early 70s motorcycle market. Positioned in the allround category, this bike offers a perfect blend of practicality and performance, making it an appealing choice for both novice riders and seasoned enthusiasts. Its lightweight design, paired with a robust construction, ensures that the RT 125 E is not only agile on urban streets but also capable of handling longer journeys with ease. As one of the notable offerings from DKW, this motorcycle stands out thanks to its unique engineering and historical significance, embodying the essence of a bygone era while still appealing to modern-day classic bike lovers. At the heart of the RT 125 E lies a spirited single-cylinder, two-stroke engine with a displacement of 124cc, delivering a respectable 17 horsepower at 7500 RPM. This engine configuration allows the motorcycle to reach a top speed of 120 km/h (74.6 mph), making it a fun ride for weekend outings or daily commutes. The 6-speed gearbox ensures smooth transitions between gears, allowing riders to harness the power efficiently, whether navigating through city traffic or enjoying open stretches of road. The air-cooled engine, with its impressive compression ratio of 11.8:1, provides not just reliability but also an exhilarating riding experience, where the roar of the engine becomes music to the ears of any motorcycle aficionado. The DKW RT 125 E is packed with features that enhance both its functionality and riding experience. Its compact design is complemented by a weight of just 108 kg (238.1 pounds), making it nimble and easy to handle. The expanding brake system, both front and rear, ensures reliable stopping power, which is crucial for safety as well as confidence on the road. With a fuel tank capacity of 10.5 liters (2.77 gallons), riders can enjoy extended rides without the constant need for refueling. This combination of lightweight chassis, responsive brakes, and a capable engine makes the RT 125 E a versatile choice for riders seeking adventure or simply a reliable mode of transport. **

Pros

  • Lightweight and nimble design enhances maneuverability and ease of handling.
  • Strong performance from the 124cc two-stroke engine delivers an exhilarating riding experience.
  • 6-speed gearbox allows for smooth shifting and versatile riding capabilities.

Cons

  • The two-stroke engine may require more frequent maintenance and attention compared to modern four-stroke counterparts.
  • Limited fuel capacity may necessitate more frequent stops during longer rides.
  • Expanding brakes, while effective, may not provide the same stopping power as more modern disc brake systems.

Technical details

Source specification data

Make
DKW
Model
RT 125 E
Category
Allround
Power
17.00 HP (12.4 kW)) @ 7500 RPM
Gearbox
6-speed
Top Speed
120.0 km/h (74.6 mph)
Bore X Stroke
54.0 x 54.0 mm (2.1 x 2.1 inches)
Compression
11.8:1
Displacement
124.00 ccm (7.57 cubic inches)
Cooling System
Air
Engine Details
Single cylinder, two-stroke
Transmission Type Final Drive
Chain
Fuel Capacity
10.50 litres (2.77 gallons)
Weight Incl Oil Gas Etc
108.0 kg (238.1 pounds)
Rear Tyre
3.00-17
Front Tyre
2.75-17
Rear Brakes
Expanding brake
Front Brakes
Expanding brake