Reduced aluminum front surprise human body for XB8 fits lower place on shock tower and it is better for high speed tracks. Allows super fine shock springtime preload modification. CNC-machined from premium lightweight 7075 T6 aluminum. The oversized big-bore shocks have an 18.5mm outer diameter and 16.0mm inner diameter, and outside fine threading for spring preload adjustment. Must be used with shock tower with two row of surprise positions and suggested to make use of the reduced holes. Titanium color. Set of 2. Precision machined with highest tolerances utilizing premium fully-automatic German CNC-machines.