You need to be more clear then, and learn how to more effectively use commas. For instance: "Cannondale produced the first mass produced aluminum bike, which was made in Pennsylvania." The comma makes it an incorrect statement.

I realized the ambiguity of your statement and made a point referring to what I thought it was most likely you meant. In fact, what possible value to the discussion is offered by naming the manufacturer who produced the first bike with an integrated headset?