New from Xray for the X4 is this optional aluminium steering block CNC-machined from premium lightweight T6 aluminium. Ultra-strong construction, it provides very long life and durability in even the most extreme racing conditions. A direct replacement for the standard composite hubs, using the steering blocks in an aluminium material reduces flex, improves consistency and will free up the car, mainly for high grip conditions and especially in spec racing classes. The X4 hub features new suspension geometry for improved steering and traction and contain an updated drive axle that moves the driveshaft pivot point deeper into the hub, in line with the hub’s rotational axis between the upper and lower arm. This alignment improves driveline efficiency and handling. The aluminium front steering plates and rear ARS plates are easily mounted depending on the hub’s location and the design of the hub is universal with the same part used at all four corners with corresponding extensions.