Ride change is very minimal if any - this is the second one of that kit that I have had and I love it. Ordered right from RC direct and it got to me in two days. I recently installed new tires went with KO2's in a 275/60/20 and did a Borla exhaust also. Loving this truck.
Thanks man - I love it had the same kit on my 2014 SLE - new tires coming soon can't decide on the Nitto MT or wait for the Ridge Grappler to come out in my size, I'm thinking of going with 275/65/20
Here is mine - 2015 AT with Rough Country 2.5 just installed today stock 20" wheels and tires. I am going to be adding new shoes soon 275/65/20 either the Nitto MT or the new Ridge Grappler which isn't available yet but looks great.
It is on them BY FEDERAL LAW to PROVE the modification caused the damage, which is difficult for them to do so it shouldn't be an issue, especially if you have a good relationship with your dealer.