Abstract: A shock absorber assembly comprises a main tube disposed on a center axis between a first and a second end and defining a fluid chamber extending therebetween. A first piston is slidably disposed in the fluid chamber dividing the fluid chamber into a compression chamber and a rebound chamber. A piston rod attaches to the first piston for moving the first piston between a compression stroke and a rebound stroke. A hydraulic compression stop includes a second piston located in the compression chamber and attached to the piston rod. A tenon couples to the piston rod, located between the first piston and the second piston. The tenon includes a frequency dependent damping valve coupled to the first piston and an enclosure extending about the frequency dependent damping valve, coupled to the frequency dependent valve and the second piston, in fluid communication with the compression chamber.