The sram gx eagle 12 speed chain the gx eagletrade chain is designed with sramrsquos eagletrade geometry the gx eagletrade chain features solid pin construction eagletrade powerlockreg and smooth efficient shifting that you can count on every time out only eagletrade is a complete system engineered drivetrain designed tested and proven to deliver the lightest highest performing most durable system for all riders on any trail eagletrade technology prov