The ball joint position is indexed and relocated to correct for alignment and range of motion for 1"-4" of lift. When used with 1" of lift, caster will be at the high end of the specification; Do NOT hit the aluminum knuckle with a hammer to separate the ball joint. Use appropriate ball joint separation tool (OTC 204-592); A ball joint press is needed to press out the ball joint in the factory arm and press it into the Zone Offroad UCA. ATD 8696 ball joint press is recommended and can be rented from most auto parts stores. Indexed ball joint cup designed to increased travel on lifted models High strength steel casting ready for offroad abuse and durability Specially designed to optimize suspension and tire clearance Designed and manufactured in the USA This Part Fits: Year Make Model Submodel 2021-2025 Ford Bronco Badlands 2021-2023,2025 Ford Bronco Base 2021-2025 Ford Bronco Big Bend 2021-2024 Ford Bronco Black Diamond 2022-2024 Ford Bronco Everglades 2021 Ford Bronco First Edition 2023-2025 Ford Bronco Heritage Edition 2023-2024 Ford Bronco Heritage Limited Edition 2021-2025 Ford Bronco Outer Banks 2022-2025 Ford Bronco Raptor 2025 Ford Bronco Stroppe Edition 2021-2024 Ford Bronco Wildtrak