Fabtech 17-18 Ford F150 Raptor 4WD Uniball Upper Control Arm KitSpec built Uniball Control Arms for the Ford Raptor are designed to replace the weak stock ball joint arms eliminating the potential failure from aggressive offroad use. These high end Arms feature giant 1. 50 ID FK American Uniballs and 17 4 heat treated stainless steel pins for superior strength. The 1. 50 OD . 120 wall 4130 Chromoly arms attach to the frame with 3 4 ID FK American Heims for a wide range of align ability while providing a more solid