2016-18 Nissan Titan XD 4WD - Fits 0-6in Lifts. Fabtech's Uniball Upper Control Arms are designed to replace the factory ball joint arms to strengthen the front suspension for aggressive offroad use. The tubular Upper Control Arms feature 1.25in OD, .120in wall thick chromoly tube construction with 1in diameter Stainless Steel Uniballs that attach to the factory spindle without drilling. These Uniball Upper Control Arms have been designed to work in conjunction with the stock suspension, or as an add-on to Fabtech's 2in and 6in systems. Features: Built with same materials as found on Trophy Trucks. 120in Wall 4130 Chromoly Tubing. 1.25in OD. 250in wall DOM Bushing Barrels. PTFE lined 1in ID Stainless Steel American Uniball. 17-4 Stainless Misalignments. Heat Treated 17-4 Stainless Steel Tapered Uniball Pins. Uniball Upper Control Arms.