The ReadyLIFT Terrain Flex 4-arm Coil Spring Lift Kit with (4) heavy-duty control arms is the premiere choice for the Jeep JL Wrangler owner who demands an incredibly high-quality ride on road while maximizing off road and rock-crawling mannerisms. The 69-6837 kit includes the best of everything and includes 4 front heavy-duty DOM tube steel front control arms. Each control arm is fitted with our proprietary Terrain Control Technology (TCT) bushings in forged housings. TCT bushings provide greater articulation and range of motion so they are far superior to the factory bonded bushings that resist suspension flex. These new heavy-duty arms provide increased ground clearance and improve caster geometry for a great ride on the road. Four linear rate coil springs provide 3.5" of lift mated with bump stop extensions to control compression and tire contact during suspension articulation. A new rear track bar relocation bracket and our new JL-specific heavy-duty adjustable front track bar ensure your lifted Jeep JL will drive and handle amazing! And of course the icing on this exceptional new JL suspension offering is the inclusion of Falcon's Series 2.1 monotube performance shocks for all four corners. These fixed-rate purpose-built custom-tuned shocks are engineered to deliver increased stability improved ride quality and comfort for daily driven Jeeps. You'll be shocked at how good your JL will ride and drive on the street and on the trail! NOTE: This kit is not compatible with Wrangler or Gladiator optional powertrains including but not limited to the 3.0L Diesel Rubicon 392 and 4xe editions.