no, bars dont need to be, infact i dont think any bars are, i think the threads just get cut into the bars when they are tightened up for the first time.
edit: for anyone who wants to know i just did this so i may aswell post it up
37 euros = Ã?Æ?Ã?â??Ã?¢ââ??¬Ã?¡Ã?Æ?ââ?¬Å¡Ã?â??Ã?£26.7226 or $54.2549
63 euros = Ã?Æ?Ã?â??Ã?¢ââ??¬Ã?¡Ã?Æ?ââ?¬Å¡Ã?â??Ã?£45.5006 or $92.3800
edit: for anyone who wants to know i just did this so i may aswell post it up
37 euros = Ã?Æ?Ã?â??Ã?¢ââ??¬Ã?¡Ã?Æ?ââ?¬Å¡Ã?â??Ã?£26.7226 or $54.2549
63 euros = Ã?Æ?Ã?â??Ã?¢ââ??¬Ã?¡Ã?Æ?ââ?¬Å¡Ã?â??Ã?£45.5006 or $92.3800