KMC X9e-Turbo EPT E-Bike Chain 136 LinksThe KMC X9e-Turbo EPT Chain is engineered around the analysis of the power transmission on e-bikes with a mid-motor showed that the frequent shifting operations under load require significantly higher safety reserves that cannot be realized with classic chains. Compatible with 9 Speed setups on Shimano, Sram, and Campagnolo and across all riding disciplines. The EPT or EcoProteq Coating is non-toxic and doubles the rust resistance compared to KMC’s RB anti-rust treatment. The Double X-Bridge construction increases efficient shift precision and shifting speed. The Inner and Outer Chamfering increases engagement with chainrings to further increase shifting abilities. The High Pin Power utilizes hollow pins to save weight on every link. This chain has 136 links and weighs 277g.766759709464