E*Thirteen FW2HPA-100 Helix Plus 12 Speed Cassette - 9-50T

Engineered for E-Bike durability and cross experience compatibility with SRAM and Shimano drivetrains. 9-50T combination for your 12 speed MTB allows for 2 tooth smaller front chainring, shorter chain length, more clearance and range. Designed to shift with Shimano and SRAM systems without compromise, so the rider can change components without concern. Improved shifting performance including Shimano 12 Speed compatibility. Improved interface between steel and aluminum clusters. 2-piece design allows for replaceable aluminum cogs. Reduces rear wheel weights, improves braking, suspension function and handling. 556% range. XD and XDR drivers only.