I have an old BMX that I don't know. I have serial numbers on the frame at the rear of the bike where the rear tire mounts.

The only identifiers I have for this bike are the serial numbers on the rear dropout, stickers that say 'Pro Sting'. Serial number on the bike is LY354 7400

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  • 2
    It's vaguely possible that the bike was somehow produced by bike builder Alain Prost. But more likely "Prosting" has to do with beer drinking. Jan 25, 2020 at 2:09
  • Um, much more likely that it’s the Pro version of the Schwinn Sting, though it would be awesome if it were really about beer.
    – Andrew
    Jan 25, 2020 at 19:36
  • Please, help us help you - see bicycles.meta.stackexchange.com/questions/1337/…
    – David D
    Jan 26, 2020 at 14:23
  • The combination of the loop tail and Redline like front gusset might be distinctive enough to identify the frame. In the pictures it is not clear exactly how the chain stays attach to the bottom bracket. It's hidden by the chain ring in the top picture. A better picture of the rear of the frame and the front gusset would help.
    – David D
    Jan 30, 2020 at 16:34
  • Could possible be an 80 - 84 Norco or Tioga, wont post as an answer as yet until I do some digging
    – Dan K
    Jan 22, 2021 at 14:44

1 Answer 1


I think it is a Schwinn.

Look the serial number - that will tell you a year, then check archives of yearly catalogues for further information.

  • Welcome to Stack exchange. I've edited your answer to make it more formal and less slang. Please read How do I write a good answer and also take the tour to learn how SE is organised.
    – Criggie
    Jan 29, 2020 at 18:52
  • I’ve searched in some of the Schwinn sites. The serial number doesn’t seem to follow the given formats, and it doesn’t show up in the databases people have made. Until you clarify, the answer does not appear to be correct.
    – Weiwen Ng
    Feb 4, 2020 at 3:51

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