Rough Country - 66122-4-inch X-Series Suspension Lift System w/Performance 2.2 Shocks for Jeep: 97-06 Wrangler TJ 4WD, 04-06 Wrangler Unlimited LJ 4WD FITMENT: Jeep: 97-06 Wrangler TJ 4WD, 04-06 Wrangler Unlimited LJ 4WD KIT CONTENTS: Front: Lifted coil springs, upper and lower adjustable X-Flex control arms, track bar drop bracket, forged adjustable front track bar, stainless steel brake lines, drop pitman arm, and sway bar disconnects; Rear: Lifted coils springs, upper and lower adjustable X-Flex control arms, track bar drop bracket, lower shock brackets, and stainless steel brake line; Shocks: (4) Performance 2.2 Shocks BENEFITS: Easy bolt-on installation; Front adjustable track bar is made of forged solid steel for unsurpassed strength and durability; Quick disconnects easily store out of way when not in use; X-Flex control arms:; Clevite OEM style rubber bushings; Flex joints with 2.5-inch diameter body and huge 1.25-inch threads; Fully rebuildable and greasable;Upper joints pivot up to 20 degrees; Lower joints pivot up to 35 degrees TECHNICAL NOTES: Tranfer Case Drop kit (97-02: #1668TC 03-06: #1669TC) or Slip Yoke Eliminator (#50-7906 - Only fits NP231 transfer cases) with CV drive shaft is recommended to avoid driveline vibration; "Rubicon" models do not need SYE kit or transfer case drop, but CV drive shaft is still recommended ITEM SPECIFICS: Installation Time: 6-8 hours; Backspacing: 4.5-inches; Recommended Tire Size: 33-by-12.50; Weight: 178.68-lbs; Superseded: PERF661X