Rock Krawler 3.5 Inch Flex Suspension System JKU




  • For 4 door JK models
  • Benefits: complete bolt in system
  • Excellent highway ride
  • Improved off-road ability
  • Caster correcting high clearance front lower control arms
  • Triple rate coil springs
  • Pro front sway bar disconnects / extended links
  • Can fit 35 inch tires with OEM fenders
  • Lifetime warranty on all hard parts
  • Upgradeable to any Rock Krawler System

Kit includes:

  • Front and rear triple rate coil springs
  • Adjustable 1.5 inch solid alloy steel front track bar
  • High clearance adjustable front lower control arms made of 1.625 inch solid alloy steel
  • Adjustable front sway bar disconnects
  • Pair of front sway bar straps
  • Rear track bar relocation bracket
  • Long travel front stainless steel brake lines
  • Extended rear sway bar links, hardware and detailed instructions
  • Does not include shocks, see below about shock and bump stop requirements


  • Requires 3 inch bump stops both front and rear
  • Generic front shock recommendation with 3 inch bump stops – 17 inch collapsed to 29 inches extended
  • Generic rear shock recommendation with 3 inch bump stops – 17 inches collapsed to 27 inches extended
  • Typically recommend 4.5 inch of back spacing on rims for 12.5 inch wide tires
  • For 2012 and newer models an aftermarket front driveshaft with 2 inch O.D. steel tubing is recommended, but not required.


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