Triumph Tiger Cub T20 250cc – 1957


The Triumph Tiger Cub T20 is a classic British motorcycle that was first introduced in the 1950s. Here’s a detailed overview of its specifications, manufacturer design, legacy, and interesting facts:


  • Engine: 199cc, four-stroke, single-cylinder, overhead valve (OHV)
  • Bore and Stroke: 63mm x 64mm
  • Compression Ratio: 7.5:1
  • Power Output: Approximately 10 horsepower at 5,000 rpm
  • Transmission: Four-speed gearbox with a manual clutch
  • Top Speed: Around 65 mph (105 km/h)
  • Frame: Steel tubular frame
  • Suspension:
    • Front: Telescopic forks
    • Rear: Swingarm with dual shock absorbers
  • Brakes:
    • Front: Drum brake
    • Rear: Drum brake
  • Fuel Capacity: 2.5 gallons (11.4 liters)
  • Weight: Approximately 225 pounds (102 kg)

Manufacturer Design:

  • Designer: Edward Turner, a renowned motorcycle designer, played a significant role in the development of the Triumph Tiger Cub.
  • Aesthetic: The Tiger Cub featured a compact and lightweight design, with classic British styling cues such as a teardrop fuel tank, chrome accents, and a minimalist approach.
  • Purpose: Designed as an entry-level motorcycle, it aimed to provide an affordable and approachable option for younger or less experienced riders.
  • Build Quality: Known for its solid construction and reliability, the Tiger Cub was suitable for both on-road commuting and light off-road use.


  • Production Run: The Triumph Tiger Cub was produced from 1954 to 1969, with the 1957 model being part of the early series that helped establish its reputation.
  • Popularity: It became popular due to its versatility, ease of handling, and economical running costs. It was particularly favored by younger riders and learners.
  • Cultural Impact: The Tiger Cub contributed to the post-war motorcycle boom in the UK and played a role in the development of motorcycle culture during the 1950s and 1960s.
  • Influence: The success of the Tiger Cub influenced subsequent models and helped Triumph solidify its position in the lightweight motorcycle market.

Interesting and Important Facts:

  • Trials Success: The Tiger Cub was used in various off-road trials competitions and achieved notable success, highlighting its durability and off-road capabilities.
  • Military Use: The British military also utilized a modified version of the Tiger Cub for training purposes, underscoring its reliability and versatility.
  • Design Evolution: Throughout its production, the Tiger Cub saw several design changes and improvements, including modifications to the frame, suspension, and engine to enhance performance and reliability.
  • Collector’s Item: Today, the Triumph Tiger Cub is a sought-after collector’s item, cherished by vintage motorcycle enthusiasts for its classic design and historical significance.
  • Restoration Projects: Many vintage motorcycle restorers take on Tiger Cub projects, often finding joy in bringing these iconic bikes back to their former glory.


The Triumph Tiger Cub T20 250cc from 1957 is a testament to British engineering and motorcycle design of the mid-20th century. Its combination of practical performance, classic aesthetics, and historical significance makes it an enduring symbol of Triumph’s legacy in the motorcycle industry. Whether used for commuting, leisure riding, or off-road trials, the Tiger Cub remains a beloved model among vintage motorcycle aficionados.


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