Built around Triumph's sport motorcycle platform, the 1957 Triumph Tiger Cub T 20 features a 199 cc (12.1 cu in) air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 10.5 HP (7.7 kW) at 6,000 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 52.8 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 Tiger Cub T 20 measures 113.4 kg (250 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (10.8 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,245 mm (49 in) wheelbase engineered for quick, flickable steering geometry. The 10-liter (2.6 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 106 km/h (66 mph).
Within MotoLibrary's Triumph archive, this model family spans 16 indexed model years from 1954 to 1969, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
52.8 HP/L
Power-to-Weight
0.09 HP/kg (10.8 kg/HP)
Engine
Displacement199.0 ccm (12.14 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsAmal monobloc carburettor
Power10.5 HP (7.7 kW)) @ 6000 RPM
Compression7.1:1
Bore x Stroke63.0 x 64.0 mm (2.5 x 2.5 inches)
Fuel SystemCarburettor. Amal monobloc
Fuel ControlOverhead Valves (OHV)
LubricationDry sumpy
CoolingAir
Transmission
Gearbox4-speed
Final DriveChain (final drive)
ClutchWet multiplate
Performance
Top Speed106.0 km/h (65.9 mph)
Chassis
Frame TypeTubular steel
Front SuspensionTelescopic forks with hydraulic damping
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.
