How is shock absorber hardening done?

Shock absorbers are used in vehicle suspension systems together with springs to ensure that vibrations and vibrations coming from the road to the wheels are absorbed without being transmitted to the chassis of the vehicle. Here, the role of shock absorbers shows a different character than springs. In these systems, the energy stored by the spring is absorbed by the shock absorbers without being transmitted to the chassis in the form of oscillations. Here, based on this principle, springs; they store the impacts and oscillations caused by the unevenness of the road by not transmitting them to the vehicle body. On the other hand, with the resistance they show in the direction opposite to the direction of movement, the shock absorbers absorb both the energy coming from the wheel and the energy stored in the spring and turn it into heat. Thus, they destroy the jolts. Shock absorbers are not just essential elements for the comfort of the vehicle. They also perform an important function, such as wheels griping the road well. Shock absorbers are an important suspension component that affects the bend dynamics of the vehicle. By ensuring that the wheels hit the ground well and do not jump, it both increases traction and shortens the stopping distance when braking. Shock absorbers are divided into two main sections as dry and fluid based (liquid, gaseous) types. Gas-type shock absorber is used in your vehicle.
Shock absorbers have different hardening methods for modified purposes. Shock absorber stiffnesses of 25%, 50%, 75% and 100% stated in your question can be achieved with different methods. The hardening process is done in accordance with the workshop possibilities with their own manual skills. In order to increase the sports character of the suspension, besides the shock absorber hardening, the methods of spring cutting or using the sports spring can also be applied. The broadcast response characteristic is changed with this method. The shortcut method of springs is an important element.
Let's come to the core of the issue. First of all, the original version of the vehicle offered to you is the most ideal version of the vehicle. This ideal state is observed in the design of the vehicle; comfort , environment, economy, quality, active safety, design and passive safety. A change you make in particular can affect all of these factors, in particular, a couple of generally. It is impossible to consider all these parameters in modifications. Therefore, I would not recommend such a hardening process. However, if you say that I want to make the suspension more sports, you should use harder (sports) bows or adopt the half-pod cut approach from the bow. I do not think of shock absorber hardening for your vehicle.

Definitions Related to the Subject:
Shock Absorber: Shock absorber, the elements used in vehicles to reduce the severity and impact of vibrations and vibrations that occur during operation.
Gas shock absorbers: Gas shock absorbers basically operate on the same principle as hydraulic shock absorbers. The piston moves back and forth inside the oil filled tube. But at the bottom, a small chamber contains high-pressure (about 25 bar) nitrogen gas. A traveling piston separates this gas from the oil part and prevents them from mixing. In gas springs; continuous pressure on the oil by the gas prevents silent operation of the piston valves and foaming of the oil. The gas chamber here assumes the role of the reserve pipe in hydraulic shock absorbers. In other words, it increases the efficiency of the shock absorber by compensating the changing volume of the shaft in the oil.
MacPherson suspension system: The MacPherson suspension system is a suspension system used especially in performance cars. The main advantages of the MacPherson suspension are its simplicity and compact dimensions. Independent wheels allow more precise control of all tire movements, absorbing shocks and vibrations and increasing comfort.

Source: auto current