is this safe?

Its safe and inproves stability. But it completely screws up the geometry, the closer together the a-arms the better.... that spaces them further away from each other. That cause's many other problems.

man my moto4 must have some kick ass suspesion then cause the a-arms are like less then an 1/8th of an inch apart

ask freek about the kit he used to own one if i remember correctly
 
mostly you'll hear negative feedback from people who haven't had the kit, and positive from most who have.

here's the short story....messes with front suspension geometry so its not gonna handle as well as it could, but it does widen it out so its still a little more stable. fine for your normal trail/beater rig, but the best option is a good set of a arms