So I bought my '10 Rubicon and it already had a 3.5" RK Lift. After a few wheeling trips and a lot of mud I began to look everything over and found that the lifts limitless flex allowed the upper control arm mount to dent the oil filter!. My question is who makes good/cheap bumpstop extensions and does anyone know how big I need? I am running 37 12.50's and have cut the flares so rubbing isn't an issue.

 

hockey pucks!!! there about 1" a piece, so start with two on each corner and go from there. either use an epoxy and mount them on the bottom inside the spring, or remove spring, drill hole through pucks, and metal spring perch, and mount that way..
i used epoxy and there on there for good!