The Royal Enfield model widely recognized as the longest-continuously-produced motorcycle is the Bullet.
The Bullet began production in 1931, making its name one of the oldest continuously used motorcycle model names. Royal Enfield originally built the motorcycle in England, while later production became centered in India after the Indian company continued manufacturing the design.
The model’s long history includes major technical changes. Early Bullets used traditional British single-cylinder engineering, while later Indian-built versions received updated engines, electric starters and other modern equipment. The enduring name therefore covers several generations rather than one unchanged machine.
The Bullet is sometimes confused with Royal Enfield’s broader brand history or with the Classic range. Its notable record concerns continuous production of the Bullet model name, not uninterrupted use of identical components or an unchanged design.