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some sz bars have a diff stem i dont feel a diff i have multiple friends that have on or the other just diff appearance to me.. they might be made of diff materials tho. not positive
 

JDBen

BST Moderator
Staff member
the stem is a different size and the tubings outer dimention on SZ bars is small than on buff bars, the logo on the stem is different and you don't have to stretch the clamp for SZ Bars
 
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