b'GM F/X RACE-PRO AILow Stiction Technology: Stictionresistance to movement caused by rubber bushings, polyurethane bushings & tight OEM style ball joints in the control armshinders the ability of the suspension to respond quickly & accurately follow the undulations of the race track surface. If the front tires cant follow the undulations of the race track surface in the cornerwith the side g-forces pushing the car outwardthe car loses front grip & goes into a push or understeer condition. Simply put, reducing stiction increases grip! LongGT Upper Control Arms: oTIG Welded 1.00 x .095 DOM Tubing in Precision FixtureoThreaded Ball Joint Cups / Offset 3/4 Rearward for Higher Caster oSteel Shafts are Slotted for RSRT Precision Slugswith Offsets from 0 to 1/2" in 1/8 Increments oUp to 2.5 Caster Adjustment EACH Way / 5 Total oLubricated Steel on Steel Bushings for Low Stiction oZerk Fitting for Greasing Shafts o170KSI 12-Point Bolts, AN Hardware oCamber Shims Included Howe Ball Joints - Zero Stiction:oStrongest, Safest Ball Joint on the Market. PeriodoHowe Ball Joints (Upper & Lower) Offer Zero Stiction for Higher GripoThe Stud Lengths are Tailored to Your Car, Ride Height &Setup to Produce the Optimum Geometry & GripRidetech or UMI Lower Control Arms:oMandrel Bent & MIG Welded DOM Lower Control Arms oLower Ball Moved Forward for increased Caster oPress-In Ball Joint Cups for Howe Ball Joints oUltra-Low Shock Mount Bridge Allows Much Longer Shock Than Other Lower Control Arms oTubular Designs are Stronger & Lighter Than OEM oZero Stiction Monoball Lower Bushings w/SpacersUMI Arms come o70-81 F-Body & 75-79 X-Body Utilize UMI ArmsBlack or Red o67-69 F-Body & 68-74 X-Body Utilize Ridetech Arms 1122'