So I installed a 2.5 RC Series II and 315/70/17 Trail Grapplers last weekend on my JKU. She feels great and tracks straight as an arrow. A little bump steer on the the highway. I am going to have my local dealer (I used to work there, so I actually trust them) align it tomorrow on their Hunter machine just for peace of mind. Any special specs I should give the guy? Anything special to ease the bump steer?

 

If it feels good now, you probably have nothing to worry about as your caster is likely ok. Otherwise, they should do a normal alignment to keep from having extra tire wear, etc.

My RK 2.5 Max Travel required no adjustments after installation. We used measurements given in the instructions.

 

Maybe toe in the front tires like from the write up on projectjk.com I did this and it helped a lot. I toed the front tires in 1/8th". And I replaced the front track bar with a teraflex monster track bar

 

To minimize bump steer, you need to get an adjustable front track bar. It does make a noticable difference.

The only thing they can align for you is your toe and your steering wheel, which can be done by yourself (and a helper) at home.