Orion vortex question

[xx4 fanatic]

Any one here have the new orion brushless motor? I'm ording an orion vortex 5.5 for my 4wd and a lrp sphere comp. (2007 ed.) Do i need to also order a sensor cable for this? does it come with one? Do i need one to run the motor? what do i need it for exactly? This will be my first brushless motor sry for some probably obvious questions.
any imput would be helpfull