Stronger by Design for eBike Power KMC was the first chain manufacturer to engineer chains specifically for eBikes with mid-drive motors. Through extensive testing of power transfer and shifting under load, KMC developed the e9 to handle the added torque and frequent gear changes that standard chains can’t withstand. Built for lasting strength and reliable performance, this 9-speed chain is ideal for eBikes, mountain, gravel, and touring bikes that demand more from every pedal stroke. Built to Last Developed for mid-drive eBikes with higher torque loads Reinforced plates and pins for superior tensile strength Designed for smooth, consistent shifting under power Compatible with Shimano, SRAM, and Campagnolo 9-speed drivetrains Suitable for eBike, MTB, road, gravel, and cross use