Rancho has NEW front, upper and lower Adjustable Control Arms for your 1? to 4.5? lifted Ram 2500/3500 featuring D2 bushings. The D2 synthetic, high articulation bushings deliver superior dampening plus improved ride and handling characteristics. The D2 bushing has a firmer inner bearing material and a softer outer material to minimize noise, vibration, and harshness (NVH). The D2 bushing is grease free with a liner impregnated into the internal bushing that serves as a lubricating agent for silent, maintenance-free operation. Bushings are housed in forged ends. Control arms are fully adjustable to allow for caster and pinion adjustment, and are made of heavy duty DOM tubing for improved strength to handle off road obstacles. Heavy duty, .188 DOM wall tubing & forged ends construction D2 high articulation, grease-free, self-centering bushings Improves ride quality reducing NVH Arms allow adjustment for caster and pinion angles Sold in pairs