EVO-3025B EVO MFG JL Rear Raised Trackbar Bracket EVO MFG JL Rear Raised Trackbar bracket is used on JLs with 3+ inches of lift to not only help recenter the axle after lifting but also and most importantly to correct roll center geometry of the vehicle. Roll Center Correction is one of the most important handling characteristics of your Jeep. Can be used in conjunction of an adjustable trackbar. INSTALLATION TIME 1-1.5 HOURS Not compatible with 392/High Tide axle