RockJock's Standard Johnny Joint® suspension system for 2007-2018 Jeep JK Wrangler 4-doors allows for efficient clearance of up to 37" tall tires (with minor trimming) and is a cost effective alternative to our full kit. Kit allows for up to 11" of rear wheel travel and 9 1/2" of front wheel travel when used with the recommended shocks. Up to 11" of front travel is attainable when used with specific shocks and some minor trimming to the vehicle. This kit is comprised of only the highest end components in the areas of strength, fit, finish, function, and the R&D testing to back them. Included is the 4 Johnny Joint adjustable lower control arms, set of 4 progressively wound coil springs that will raise the vehicle 4 1/2", front and rear bump stop kits, front and rear trac bar relocation bracket kits, adjustable rear sway bar links, dropped pitman arm, and front and rear brake hose relocation brackets. All necessary hardware and detailed installation instructions included. NOTES: 2012 & newer models will most likely require exhaust modifications to allow for suspension down travel. Shock options are available from all of the top suppliers.