Silverado & Sierra 4" Drop Front Upper & Lower A-Arms (2007-13) Red 2007-2013 Silverado & Sierra Caliper piston volumes are matched

Caliper piston volumes are matched for full compatibility with the OE power brake booster and master cylinder

The arms are made with 12 gauge HSLA steel for increased strength and are powder coated for long-lasting durability

Slotted 4" Transmission Mounting Location

the combination of heavy duty or performance leaf springs and HYPERFLEX performance polyurethane spring bushings deliver the maximum benefit

Thread (Right Hand / Left Hand) : Right Hand

Silverado & Sierra 4" Drop Front Upper & Lower A-Arms (2007-13) Red 2007-2013 Silverado & Sierra Caliper piston volumes are matched(In Stock) Suspension Engineering chassis and suspension components are designed and tested to create a high strength, durable product, with great fitment. Our manufacturing process employ automated tubing benders, CNC machining, and laser cut components. We stand behind our products, and you will not find a better quality product at such an affordable price. Features include: Heavy Duty Mild Steel Construction 1. 25" x . 120 Wall DOM High Strength