I can't say on a pro but on a cat it made it so it handles as good or better than a pro, ( I think better and more predictable but I don't own a pro) I highly recommend it. I did the cheap upgrade as a test and used the stock shocks and had them changed for the skid, its cheaper but it made the sled so predictable and manageable so much so it was ridiculous. The sled just started doing what I wanted and in control. After adjusting it and riding in all conditions I can say it flat out works, but next year I will be going with the full on kit and raptor shocks, I can see there being even better advantages with a fully adjustable shock. In my opinion if you have boost you are wasting it without a KMOD.