The majority of increasingly popular "speed" pedelecs are equipped with mid -drive motors which transfer immense torque through the chain when shifting. In response, KMC has developed e-bike specific, torsion resistant chains to managing these extreme drivetrain conditions. The direct force from the mid-motor to the cassette causes an enormous strain load on the chain which means a stronger and more durable chain is crucial. KMC has contended with this by combining 20% upgraded durability with the highest Pin Power on the market to ensure longer chain life and higher torsion and stress resistance for the KMC X eBike Series Chains.