Machined aluminum upper surprise cap for T4 SLP aluminum shock absorbers. Ebony color. Set of 2. top of the aluminum limit features a tiny vent opening making surprise construction acutely predictable and easy, since extra surprise oil will escape through this vent gap ensuring only the appropriate degree of the oil is within the shock assembly. Machined interior ridges confirm proper placement and sealing associated with super-soft silicone membrane layer layer.