the 98 XJ i just picked up has the 6.5" pro series long arm kit with the rear coil conversion. What im trying to figure out is why it does not need a rear track bar. The 97 TJ i have has one as does the 93 YJ (useless part for leaf sprung vehicles) it feels a little loose at higher speeds and when hitting large bumps. The front end is all tight so not sure what is causing it. Anyone here running the same lift? any ideas or input is greatly appreciated.

 

The triangulated 4-link suspension used for rear coil over conversions mostly prevents the axle from shifting laterally.