It sounds like you may have answered your own question. How long are the extensions?I've a 2.5" lift and i've changed original rubber bump stops with metalcloak. I've teraflex bump extensions. Now the space between the front bump stop and the axle is like 1/2"
Have i to take off the extesions?
The bump stops are there to protect your shocks from bottoming out, or springs being over-compressed, without knocking your teeth out. If your springs are longer with the JKS springs, then there should be more travel before harm is done.The extensions is from teraflex 2.5" lift kit, now i run 2.5" springs from jks