E*Thirteen XD Driver Body Converting Your Hub If you have an E*Thirteen TRS+ hub, you can convert it so you can use SRAM XD cassettes. The E*Thirteen XD Driver Body is designed for TRS+ hubs with gen 2 axles and makes it easy to use SRAM XD cassettes. Features Converts E*Thirteen hubs so you can use SRAM XD cassettes TRS+ hubs must have a gen 2 axle E*Thirteen part number: HU1435 | E*thirteen Xd Driver Body | Black | Xd Driver | Aluminum