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DKW RT 125 2
1955Sportbike

DKW RT 125 2

Key specifications

Engine
123 cc
Power
6 HP
Weight
86 kg
Fuel type
petrol
Fuel capacity
2.5 L
Transmission
3-speed
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 1955 DKW RT 125 2, a classic gem that captures the spirit of post-war European motorcycling. Positioned firmly in the sport category, this lightweight motorcycle offers a delightful blend of performance and practicality, perfect for both urban commuting and spirited weekend rides. With its sleek lines and minimalist design, the RT 125 2 epitomizes the era’s focus on efficiency and agility, making it a sought-after model among collectors and enthusiasts alike. Its compact dimensions and low weight of just 86 kg (189.6 pounds) allow for easy maneuverability, ensuring that riders can navigate through tight spaces with confidence. At the heart of the DKW RT 125 2 lies a robust 123cc single-cylinder, two-stroke engine. Delivering an impressive 5.7 HP (4.2 kW) at 5000 RPM, this powerplant is engineered for spirited performance, making it an exhilarating ride for its time. The bore and stroke dimensions of 52.0 x 58.0 mm contribute to a lively character, while the air-cooled design ensures reliability even in the heat of summer. With a simple 3-speed gearbox and a wet multiplate clutch, the RT 125 2 provides a smooth riding experience that keeps pace with the demands of its rider. Whether zipping through city streets or cruising along country roads, this motorcycle offers a thrilling yet manageable performance, ideal for both novice and experienced riders. The DKW RT 125 2 is not just about performance; it also boasts a range of thoughtful features and technology that enhance the riding experience. The telescopic fork front suspension combined with drum brakes—both front and rear—ensures stability and control, allowing riders to tackle corners with ease. The single cradle frame design further contributes to its lightweight and nimble handling, providing a solid foundation for spirited rides. Additionally, its kick starter adds a touch of vintage charm, reminding riders of a simpler time when motorcycling was all about the thrill of the ride. **

Pros

  • Lightweight and Agile: The low weight of 86 kg makes it highly maneuverable, perfect for urban environments.
  • Classic Aesthetic: The retro design appeals to vintage motorcycle enthusiasts, making it a desirable collector's item.
  • Simple Maintenance: With a straightforward two-stroke engine and minimal electronics, maintenance is easy and accessible.

Cons

  • Limited Power Output: With only 5.7 HP, it may feel underpowered for riders seeking high-performance capabilities.
  • Basic Suspension: The lack of rear suspension means a stiffer ride on uneven surfaces, which may not be suitable for all riders.
  • Drum Brakes: While effective, drum brakes are less responsive than modern disc brakes, which may be a concern for performance-oriented riders.

Technical details

Source specification data

Make
DKW
Model
RT 125 2
Category
Sport
Starter
Kick
Power
5.70 HP (4.2 kW)) @ 5000 RPM
Clutch
Wet multiplate
Gearbox
3-speed
Ignition
Magneto
Fuel System
Carburettor
Bore X Stroke
52.0 x 58.0 mm (2.0 x 2.3 inches)
Displacement
123.00 ccm (7.51 cubic inches)
Cooling System
Air
Engine Details
Single cylinder, two-stroke
Transmission Type Final Drive
Chain
Dry Weight
86.0 kg (189.6 pounds)
Fuel Capacity
9.50 litres (2.51 gallons)
Overall Width
660 mm (26.0 inches)
Overall Height
660 mm (26.0 inches)
Overall Length
1,959 mm (77.1 inches)
Power Weight Ratio
0.0663 HP/kg
Seat
Single spring-mounted
Wheels
Spoked
Frame Type
Single cradle
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Expanding brake (drum brake)
Rear Suspension
None
Front Suspension
Telescopic fork
Rear Brakes Diameter
140 mm (5.5 inches)
Front Brakes Diameter
140 mm (5.5 inches)