Our TrueCenter™ pivot socket, direct replacement, lower control arms improve suspension geometry by better controlling the balljoint travel arch. A one-piece spherical bearing (80% larger in diameter than our previous rod end), and high-strength polymer races, create a deflection free, low friction pivot point. Bearing preload is maintained with a threaded retaining ring and is secured by a locking set screw. A lubrication zerk fitting is easily accessed at the bottom of the housing. The 1-1/4” shank socket housing and 1-1/8 x .156” wall steel tubes meet at an overlapping robotic spray-arc welded joint. Balljoint and mid-plates made from ¼” steel plate eliminate deflection at the spindle and anti-roll bar attachment points. Premium quality, screw-in balljoints are used and can be replaced as necessary. Arms are shipped fully assembled and include grade 8 mounting hardware.