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Sport · 1953

RT 125 2

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MotoLibrary Score
34 /100 Commuter
Power/Weight
0.07 hp/kg
Engine
123 ccm

1953 DKW RT 125 2 Technical Analysis & Specification Breakdown

Positioned in DKW's sport motorcycle lineup, the 1953 DKW RT 125 2 features a 123 cc (7.5 cu in) air-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 5.7 HP (4.2 kW) at 5,000 rpm, transferring power to the rear wheel through a 3-speed gearbox and chain final drive. With a specific output of 46.3 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.

On the scales, the RT 125 2 measures 86 kg (190 lbs) dry, translating to a power-to-weight ratio of 0.07 HP/kg (15.09 kg per horsepower). The 9.5-liter (2.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's DKW archive, this model family spans 7 indexed model years from 1952 to 1958, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.

Specific Output
46.3 HP/L
Power-to-Weight
0.07 HP/kg (15.09 kg/HP)
Engine
Displacement 123.0 ccm (7.51 cubic inches)
Engine Type Single cylinder, two-stroke
Engine Details Single cylinder, two-stroke
Power 5.7 HP (4.2 kW)) @ 5000 RPM
Compression 6.1:1
Bore x Stroke 52.0 x 58.0 mm (2.0 x 2.3 inches)
Fuel System Carburettor
Ignition Magneto
Cooling Air
Transmission
Gearbox 3-speed
Final Drive Chain (final drive)
Clutch Wet multiplate
Chassis
Frame Type Single cradle
Front Suspension Telescopic fork
Rear Suspension None
Wheels & Brakes
Front Tyre 2.50-19
Rear Tyre 2.50-19
Front Brakes Expanding brake (drum brake)
Front Brake Ø 140 mm (5.5 inches)
Rear Brakes Expanding brake (drum brake)
Rear Brake Ø 140 mm (5.5 inches)
Wheels Spoked
Dimensions & Weight
Dry Weight 86.0 kg (189.6 pounds)
Power/Weight 0.0663 HP/kg
Overall Height 660 mm (26.0 inches)
Overall Length 1959 mm (77.1 inches)
Overall Width 660 mm (26.0 inches)
Fuel Capacity 9.50 litres (2.51 US gallons)
Other
Starter Kick
More from DKW
Buying Checklist

Before You Compare This Bike

Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.

Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🏁
Best For
Sport & Track
⚖️
Handling
Very lightweight — easy to handle
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