The Adria company were better known for their motor vehicle and boat engines, but between 1912 and 1928 they built a range of 276cc, 282cc, 294cc and 346cc side-valve single-cylinder powered bikes.[1][2]

References

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  1. ^ Erwin Tragatsch; Ash, Kevin. The New Illustrated Encyclopedia of Motorcycles, Quantum Publishing, London, 2000 ISBN 1-86160-342-8
  2. ^ ManxNorton.com. "Adria Motorcycles". Classic Motorcycles at Sheldon's Emu. Retrieved 2022-12-07.