We have bundled everything you need in a leveling kit for your F-150 4WD with high quality Cognito components.There is no guesswork. Cognito components are engineered, manufactured, and assembled in the USA. The Cognito 2.5 Inch Standard Leveling Kit includes the Cognito Uniball SM Series Upper Control Arm Kit. The Cognito Uniball SM Series Upper Control Arms replace OEM upper control arms, as well as add style, function and performance to your vehicle by correcting the uniball angle for lifted and leveled applications and improving the allowable droop travel for a better ride quality. The control arm kit features boxed sheet metal arms that are  powder coated semi-gloss black.The .75 Inch Strut Spacers and .5 Inch Steel Preload Spacers are constructed out of heavy duty steel and finished with a durable semi-gloss black power coating.