The Wahoo KICKR is a direct drive bike trainer so you will be removing the rear wheel of your bike. That means no more training tires or skewers! To find out the speed of your bike look at the rear cassette of your bike and count the number of rings. That's your bike speed.
The Wahoo Kickr can accomodate 10 or 11 speed bikes, 8 or 9 speed bikes use the Wahoo Snap and the rear wheel stays on.