Originally Posted by
jan nikolajsen
You could be right. But also consider
this page with original Reynolds catalog material and personal comments from Terry from Reynolds.
Interesting...
So that Trek catalog says,
Frame: 531cs
Fork: 531cs
Stays: 531cs
But that page you linked says the 531cs sticker means its a Club Sport frame set which would only have 531 main tubes like you said.
The way its listed in that Trek catalog is pretty damn misleading....