Yeah the RK looks great, from what ive read its quite a bit beefier than hte RE1660. Its about the same price for what i can get them for, but the RK says it can run up to 8" of lift which i like hearing, the RE1660 says 4-6" though. I do like that hte RE1660 has a super flex joint, but the bottom bushing worries me because if i am correct the axle end bushing on hte Rubicon Express trackbars are the same, whether it be the 1600 or 1660, i have the 1600 under there now and that bushing is lose and needs to be replaced, this contributed to some serious death wobble for me, so i am questioning going with RE again for a track bar, i want a STIFF bushing in there - can any one give me any info on how tough the bushing of hte RK track bar is? I dont care about ride quality, at least not in that location.