b'GM F/X RACE-PRO AITrack-Pro Spindles & Track-Pro Hub/Bearing Assemblies:oStrong & Lightweight T1 Steel UprightoMPI C6 Corvette Heavy Duty Hub/Bearing Assembly oUltra Precision & Premium Materials Rated at 1375# & 1625#o5 x 4.75 Wheel Pattern oNew ARP 1/2"-20 Long Wheel Studs Included, but Not InstalledAsk Ron AboutoThe Narrowest Spindle & Hub Package on the MarketHub Upgrade oLower Scrub Radius & More Room for Big BrakesOptions oWilwood 13 & 14 & StopTech 14 Brakes Available for this SpindleTrack-Star Spindle Steering Arms:oRear Steer Arms for 67-69 F-Bodies & 68-74 X-Bodies oFront Steer for All Other GM Models oSlotted & Slugged 6061-T6 Aluminum Steering ArmsoComes with 0, .250 & .500 Offset Slugs for4.50-5.50 Steering Arm RangeoActual Effective Steering Arm Range is Longer, Depending on Amount of Caster oYou can Change Slugs from Short & Fast Ratio to Long & Stable to Suit the Drivers Needs in Minutes oHigh Offset Increases Ackerman, Optimizing the Tire Slip Angle, Increasing Grip on the Inside Front Tire & Adding Overall Front Grip 1127'