Note: (Only compatible with vehicles equipped with factory forged steel upper control arms. Not compatible with vehicles that have stamped steel or aluminum control arms.) Compatibility:These upper control arms are designed to fit the front upper position of the following vehicles: 2007-2018 Chevy Silverado 1500 &Tahoe ,2007-2014 Chevy Suburban 1500 &Avalanche,2007-2014 GMC Sierra 1500&Yukon,2007-2014 Cadillac Escalade. It is crucial to ensure that the control arm is compatible with your specific model and year. (If your original factory control arms are made of stamped steel or aluminum. it cann't be replaced by our upper control arms.) High Quality: Front upper control arms with ball joint assembly are made of high strength steel and sturdy mounting brackets for unmatched strength and durability . The ball joint rotates between the steering joint and the control arm to provide a safe and smooth ride. Enhanced Driving Performance: Polyurethane (PU) bushings replace rubber bushings, offering better performance in low temperatures , while the improved structural design enhances off-road driving performance. With a comprehensive upgrade to the 2.0 generation, the angle of the pipe is optimized. Material: Constructed from heavy-duty tubular alloy steel, ensuring durability and strength. Ball pins and seats are engineered for long-lasting performance. Package Includes: Comes as a set of 2 control arms (left and right side) with ball joints pressed in. For any assistance, feel free to contact us, and our team will respond within 24 hours. Front Upper Control Arms for 2-4" Lift - 2007-2018 Chevy Silverado GMC Sierra 1500, 2007-2013 Avalanche, Escalade EXT, 2007-2014 Suburban 1500, Tahoe,Yukon,PU Bushing Suspension Control Arm(2PCS)