Heavy duty 7075 alloy rear hubs with vertical ball stud mounting for the Xray XB4. Anodized in glossy black. Durable but machined to be lightweight. Vertical ball stud mounting allows for easy roll center adjustments by adding shims. The included 2mm spacer with rear hubs are designed to match the stock geometry of the plastic hubs for easy set up reference. These hubs have the stock 0 degree geometry.
