The high torque loads of E-MTBs require tough components. The straighter chain line EX1 offers allows the use of a chain that is wider & more robust than those found on drivetrains not specifically engineered for E-MTBs. The EX1 chain has been engineered to run quiet across the gear range & transmit more power to the rear wheel.
Features: EX1 chain is wider & designed for the high-torque, heavy-duty use of E-MTB