Note: (Only compatible with vehicles equipped with factory stamped steel or aluminum upper control arms. Not compatible with vehicles equipped with factory cast steel upper control arms.) Lightweight with High Strength: Aluminum’s control arms lightweight nature reduces suspension load, improving acceleration, braking, and fuel efficiency. Precision casting or forging ensures excellent strength and durability, allowing the control arms to handle high suspension loads while maintaining stable handling performance.（Fits Vehicles with Stamped Steel and Aluminium Control Arms Only. Excludes Vehicles with Factory Cast Steel Control Arms） Superior Heat Dissipation and Aesthetic Design: Aluminum’s upper control arms excellent heat dissipation helps the control arm maintain optimal temperatures under high loads, reducing heat damage and extending lifespan. Additionally, anodizing and other surface treatments enhance the aluminum’s appearance, making it more durable, resistant to fading, and improving the vehicle’s overall aesthetic. Polyurethane vs. rubber bushings: Polyurethane excels with superior durability, reduced wear, and enhanced stability compared to rubber. They offer precise handling, minimal noise/vibration, and elasticity in diverse conditions, making them ideal for performance enthusiasts seeking reliability and extended lifespan in vehicle suspension systems. Compatibility: These control arm are designed to fit the front upper position of the following vehicles: 2014-2018 Chevy Silverado 1500, GMC Sierra 1500, 2015-2020 Chevy Suburban 1500,Yukon,Tahoe Yukon XL, Cadillac Escalade ESV. It is crucial to ensure that the control arm is compatible with your specific model and year.（Fits Vehicles with Stamped Steel and Aluminium Control Arms Only. Excludes Vehicles with Factory Cast Steel Control Arms） Compatibility: These control arm are designed to fit the front upper position of the following vehicles: 2014-2018 Chevy Silverado 1500, GMC Sierra 1500, 2015-2020 Chevy Suburban 1500,Yukon,Tahoe Yukon XL, Cadillac Escalade ESV. It is crucial to ensure that the control arm is compatible with your specific model and year. Forged Front Upper Control Arm for 2014-2018 Chevy Silverado GMC Sierra 1500, 2015-2020 Chevy Suburban 1500,2-4" Adjustable Front Aluminum Control Arm,Silver Front Suspension A-arms(2ps)