However, I think too many people are assuming the same thing applies with JKs, or specifically JK Unlimiteds. When researching lift kits, I asked vendors for RTI scores for their long arm and short arm (if applicable) kits. Of the ones that would actually share those numbers, the differences were well below what you might expect. Measurable, yes, but worth the expense and extra installation work? I couldn't justify it. I found, based on the vendor provided numbers, less than a 10% increase in RTi scores. So I suppose it you are in need of every last millimeter of articulation, a long arm kit makes sense.