Aluminum upper clamps the X4 bulkheads. Machined to accommodate the aluminium caster inserts. Mounts on the reduced bulkheads with particularly made centering lugs, for optimum persistence of this caster setting, including overall control. Top of the clamps feature 1mm milled grooves for the ball-bearing hubs. The upper clamps have now been milled to get rid of unneeded material to reduce their size and weight. The screws installed through the bottom associated with caster inserts capture the inserts in top clamps to stop them from coming free while servicing the car. The screws additionally act as top of the arms pivot ball mounts, reducing the amount of elements in the installation and reducing weight. The upper clamps and caster inserts are produced from premium Swiss 7075 T6 aluminum and black colored anodized.
