Man Posted July 4, 2021 Report Share Posted July 4, 2021 Have old ossa dirt bike need to identify what year it is and what size motor it hy Quote Link to comment Share on other sites More sharing options...
Wheelin Posted September 16, 2021 Report Share Posted September 16, 2021 Post up a picture mate and someone may be able to help you Quote Link to comment Share on other sites More sharing options...
woody Posted September 16, 2021 Report Share Posted September 16, 2021 The frame number and engine number would have matched when the bike was produced so if you can't find a frame number on the headstock check the engine number against this chart which will tell you what you have. The only difference in the numbers is that the frame is prefixed B and the engine prefixed M http://ossa.2y.net/ossa/bilder/modelos/index.html Quote Link to comment Share on other sites More sharing options...
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