Wippermann connex 9se e bike chainthe wippermann connex 9se e bike chain features a reinforced design combined with stainless steel inner links that makes this chain extremely resistant to the high torque load changes within an e bike drivetrain features dimensions 12 x 11128 pin length 660mm roller width 220mm pin hardening xhb links 132 speed 9 speed suitable for e bike weight 322gbuy wippermann components from chain reaction cycles the worlds largest online bike store