evo.com | SRAM Cassettes > It's one lower! The SRAM NX Eagle PG-1230 12-Speed Cassette has a 11-50t range, giving you that extra low end without losing your high speeds. Optimized gear steps take you from climbing to mashing logically, without huge jumps between gears. And as the only Eagle cassette durable enough for use on eBikes, it can stand up to heavy miles. Steel and Aluminum 8 lightweight, stamped steel cogs and 4 high-strength steel cogs pinned onto an aluminum spider. 11-50 Tooth Gear Range A perfect fit for any ride with optimized gear steps across entire range Compatible with 8-, 9- and 10-Speed Splined Driver Bodies Compatible with All Eagle Drivetrain Systems PowerGlide II Cassette technology optimized for offroad. More reliable. More durable. Better performing, thanks to an optimal tooth profile and shift ramp design for quick and positive index shifting. Go climb a mountain. | SRAM NX Eagle PG-1230 12-Speed Cassette 2023 - 11-50t | Aluminum