One framework containing composite components (except pistons) for 2 T4 & X4 ULP aluminum shock absorbers. These shock components work the upper surprise cap with a hole enabling faster, easier and many other things comfortable shocks rebound modification. Updated for the X4, with 2 vent holes inside top cap, in place of 1. This can alllow for a far more predictable and forgiving maneuvering and improves traction.