This is not an OE replacement ball joint. These are available for custom control arm projects featuring knuckles from many modern Lexus and Toyota applications. Get the best ball joint available for custom front upper control arm projects with these modern architecture, maintenance-free builder series ball joints. Designed, engineered and assembled in Colorado, these next generation ball joints are the result of a relentless pursuit of product performance and longevity. .STP files and technical sheets are available so these maintenance-free ball joints can be integrated into a custom fab job or aftermar ket design and production of upper control arms.