Originally Posted by
maddog34
21.7mm stem.. they exist... and they are mostly old. i hhave two bins of gooseneck stems here...One of the 21.7mm is an old Sakae Ringyo, SR brand, and all aluminum.. the others are steel or BMX steel with an aluminum BMX style clamp...
Do you mean 21.15mm? Sometimes these are labeled 0.833". Are you sure there are 21.7mm stems?