These are our square taper bottom bracket shells which can be used to change your square taper bottom bracket to accommodate your frames specific shell width. They are available in 4 widths: 63mm (24 grams), 68mm (26 grams), 73mm (27 grams), and 100mm (33 grams). Each shell is black anodized for additional corrosion protection. If you have an existing bottom bracket and are ordering a different width shell please make sure it is compatible with the length spindle you have. Please note that these shells will not work with our 1st Generation Square Taper Bottom Bracket (In production from 1971-1973). Our first generation square taper bottom brackets were silver soldered together and are not serviceable. INSTRUCTIONS Square Taper Bottom Bracket Installation (pdf)
