Xray have released these aluminium caster blocks for XB9. CNC machined from premium Swiss 7075 T6 aluminum they are hard coated for extra durability and long life. Ultra-strong construction provides very long life and durability in even the most extreme racing conditions. The lightweight block features ‘zero kingpin’ suspension geometry and the new 3 roll center positions which allow for very fast and comfortable roll center adjustment. Using the shims under the front linkage a different roll center position can be set-up very easily. The preset caster block is integrated and non-adjustable. Combined with the XB9 front kick-up of 10° this block gives a total caster angle of 20°/22°/24° for increased steering and precision. Includes composite bushings for super-precise and smooth steering action.