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

Helix Plus Cassette - 9-50T - 12-Speed 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