b'GM F/X RACE-STAR AIXTRACK-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 RangeoChange Slugs from Short & Fast for Autocross to Long & Stable for Road Course in Minutes oHigh Offset Increases Ackerman, Optimizing the Tire Slip Angle, Increasing Grip on the Inside Front Tire & Adding Overall Front GripNew Borgeson Performance 12.7-1 Steering Box: oThe ALL NEW Borgeson Steering Box isNot a Copy of Anything on the Market oBrand New, All New Internals, Heavy Duty Case Design with Increased Gusseting to Handle theHigh Force Loads of 315 & 335 TiresoSame Modern Feel & Feedback as a .210 TorsionDelphi Series 600/670 Steering Boxes, But StrongeroNew Design Moves Fluid Flow AWAY from the Heato1-1/4-36 Large Spline Shaft for the Pitman ArmoAircraft Machined Washer Shim Kit to Level BoxTech Tip 22: A. Why not install a Rack & Pinion? It is harder to achieve as much Ackermanas we want/need with a rack. Its doable if were designing the frame from scratch. But we cannot place the rack where it really needs to be if were working with the factory subframe. Frankly, all the add-on rack kits weve seen have horrible geometry in GM applications.B. No Racer worth his salt runs a steering box with centerlink (aka drag link) linkagewithout squaring it all up. Just like correcting the geometry of the OEM suspension, if we want a good handling, proper & consistent steering race carwe have to square up the steering box & linkage. How?See pages 386-393 for a full tutorial.C. Our AXT-Star Centerlink is a game changer for steering box race cars. Slotted centerlinks to relocate the inner tie rod pivot point up or down are not new. Been around for years. But the ability to move the inner the inner tie rod pivot point inwards or outwards is brand new! Relocating the inner tie rod pivot point up or down simply provides us with more or less bump steer. Relocating the inner tie rod pivot point in or out (which changes the tie rod length needed) redefines the bump steer curve characteristics.If the bump steer shows toe-IN in lift & toes OUT initially in dive . but then toes back IN with further dive = the mounting points of inner tie rods is too narrow. If the bump steer shows toe-OUT in lift & toes IN initially in dive . but then toes back OUT with further dive = the mounting points of inner tie rods is too wide.The AXT-Star Centerlink can be setup for the optimum bump steer curve with ANY strategyfor suspension you choosehigh travel, low travel, different camber gains, etc.1162'