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What are Shock Valve shims?

Updated: Apr 19, 2023

Shock valve shims are thin metal discs that are used to adjust the damping characteristics of a shock absorber. They are placed in between the piston and the valve stack in the shock absorber and can be added or removed to adjust the amount of oil or gas flow through the valves.

The valve shims have different thicknesses, shapes, and patterns, which affect the amount and speed of oil or gas flow through the valve stack. A thicker shim will restrict more oil or gas flow, which results in a firmer shock absorber with increased damping force, while a thinner shim will allow more oil or gas flow, which results in a softer shock absorber with decreased damping force.



Shim stacks can be customized to adjust the shock absorber's response to different types of terrain and driving conditions. For example, for high-speed off-road driving, a stiffer shock absorber with a thicker shim stack may be used to prevent bottoming out, while for low-speed rock crawling, a softer shock absorber with a thinner shim stack may be used to allow the wheels to maintain better contact with the ground.

Overall, shock valve shims are an important component in adjusting the damping force and characteristics of a shock absorber. They allow for customization and fine-tuning of the shock absorber to suit specific driving conditions and preferences.


Shock valve shims are thin metal discs that are used to adjust the damping characteristics of a shock absorber. They are placed in between the piston and the valve stack in the shock absorber and can be added or removed to adjust the amount of oil or gas flow through the valves.

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