Which extra parts are you referring to?That’s not correct, I’ve installed over a dozen in the past 2 years, and never had one be exactly 2” there’s no way it will only lift you 1 inch higher than you are stock. Rubicons included. I’m guessing best case you’ll get 2.5” of lift, worse case 3” or over. That being worst case because with that much lift you’ll have to purchase and install extra parts in order for it to drive sweet.
Here’s link that will explain it..........Which extra parts are you referring to?