KMC E12 Turbo EPT 12 Speed Electric Bike ChainKMC E12 Turbo EPT 12 Speed Electric Bike Chain Designed for mid drive motor e bikes, the e12 Turbo EPT 12 Speed E Bike Chain elevates tensile strength to exceed the international standard by over 30%, so you can push even harder. To give durability a boost, the chain undergoes special heat treatment and uses KMC's patented metal coating for rigidity, flexibility, strength, and reduced wear and tear. 12 speed E Bike chain with reinforced pulling force