For complete installation instructions, check out the Eagle Transmission Manual.
The XS-1270 Eagle Transmission Cassette mounts to splined 8, 9, and 10-speed driver bodies, but uses the same splined cassette tool as XD and XDR compatible cassettes.
After the XS-1270 cassette has been removed 5 times, you must apply new Threadlocker 243, or equivalent, to the inner threads of the driver body prior to reassembly.