Considering upgrading my aev 2" spacer lift for a coil lift. Currently I have on order a jcr front bumper (55 lbs) and plan to add a winch and rear bumper. As I read coil lift descriptions I'm seeing terms that are confusing: standard rate (assume stock?) progressive (what?) heavy duty, light duty (less than stock?). I want more lift and don't want to lose any more with the weight. Looking at the rock krawler mod stock 2.5", or flex lift 2.5" (do I really need the front lca's) thanks

 

I'm also seeing different net heights with springs anyone know how much net with the rock krawler?