CB Engineering 2008 - 2012 Jeep Liberty and Dodge Nitro Rear Upper Control Arms. These replace the weak stock rear control arms. The stock control arms are made of thin steel tubing with rubber bushings that don't allow much articulation. Our control arms are made from heavy wall DOM tubing that will last a lifetime and will never break. On the body mount side our control arms come with polyurethane bushings and custom stainless steel sleeves to work with the unique width of the KK control arm mounts and metric bolts. Zerk fittings are standard on all each joint. On the axle mount side we use Johnny Joints for better articulation for more adjustment than stock arms. These adjustable control arms allow for over 1 inch of fine tuning of the control arm length to center the axle in the wheel opening when using larger lifts. These control arms are shipped bare steel for final coating by customer. These are designed for 0 to 4" of lift. We now offer arms that are 1" longer than stock to allow more adjustment for higher lifts. If you order longer arms make sure you need them and pushing the axle to far back will require a longer rear drive shaft.