The Cognito 110-90287 Tubular Upper Control Arms replace the factory control arms in your 2001-2010 GM 2500HD/3500HD. This durable, tube design provides serious strength making them great for towing and off-road use. Designed with a bolt-in style balljoint, that is not only stronger than stock, it's sealed design improves reliability by keeping the elements and road debris out. These Upper Control Arms feature brackets for a dual shock setup. This Upper Control Arm kit will work with a stock, or lifted truck to assist in leveling, help with alignment issues, and gain more droop travel. Suited for off-road use, daily driving, and towing. Features: Tubular Design Bolt-In Ball Joint Style Increases Droop Travel By 20% Sealed Ball Joints Provide Longer Life In Harsh Climates Kit Includes: Driver & Passenger Upper Control Arm, (2) Ball Joints, (2) Bump Stop Pads, (8) Bushings, (4) Crush Sleeves, (1) Hardware Pack.