b'GM F/X AXT-PROLow 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! Race Style Upper Control Arms:oHD 1.00 OD x .095 WallDOM Tubing - MIG Welded oSteel Shafts for Reliability oGreaseable Shafts EnsureLong Life & Low StictionoBolt-In Ball Joint Mountsfor Howe Ball Joints oBall Joints Mount Shifted Rearward for Higher Caster oDifferent Versions Shown for Different GM Models oFactory Bolt Spread Fits Factory Frame Mounts & Slotted AXT-STAR MountsHowe 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 oSelf-Lubricating Delrin Bushings = Low Stiction o70-81 F-Body & 75-79 X-Body Utilize UMI Arms o67-69 F-Body & 68-74 X-Body Utilize Ridetech ArmsUMI Arms come Black or Red 528'