Framebuilders - 631 Tubing
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1. How does 631 compare to Zona?
2. Head tube collars not required???
Asking because Bianchi's Vigorelli appears to not use collars, is that possible?
09-29-11, 02:25 PM
not sure about the comparison of tubing. The need for collars is a function of tubing thickness. If you don't want to use them, tubing thick enough to use without a collar is a stock item, at least for True Temper, Columbus, and Deda.
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