imcranco wrote:Can anyone tell me the proper frame for my 1957 motor (57xl1729) I've been told it should us a 1956 K frame by some and others say a 1957 XL frame. Supposedly the very '57s used the late K frames. I would love some in-put. I have a 56 and 57 frame
[/quote]hennesse wrote:Over in the Technical section, there's an article called "Serial and Other Numbers" - it has info about frame date codes. Your bike was #729 of 1988 produced. Some guesswork about monthly production puts it around January 1957. The frame was probably made 1-2 months earlier, maybe November or December 1956. So your frame date code might be K6 or L6
What are the date codes on your frame?
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