This is from the Sky site.
""What is a Widening Kit?

What this spacer does  is allow you to run IFS wheel hubs on a strait axle front end. IFS wheel hubs wheel flanges are offset further to allow the front ends of these trucks to match up to the rear, which is 58 inch's wide. A pair of these CNC machined spacers is needed to adapt either your current solid axle rotors and calipers, or the upgraded IFS V6 calipers and FJ-40 or FJ-60 series vented rotors. We supply all needed hardware to bolt this spacer to the rotor. This can be done in your garage, no special equipment needed. Average install time with correct tools and parts is 2.5 hours.""


I don't see any mention for lockouts.

So, I guess I can see why you're confused!