What year zj track bar fits 2001xj want to upgrade to a beefier set up. All help wanted.

The ZJ track bar isn't much different than the XJ.

Is it direct fit I also want to use the zj tie rod and tie rod ends for over the knuckle setup. Just didn't know if there was a specific year that matches up the best for the swap/ upgrade. Thanks in advance for the help.

ZJ tie rods are an upgrade but the track bar isn't, the XJ and ZJ track bars are almost identical, you need an aftermarket one for an upgrade.