Pistonrod diameter upgrade

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What is the diameter for JRZ's pistonrods

Our motorsport sturts and dampers have 22 mm pistonrods, when upgrading the pistonrods the diameter is 25 mm.

Pistonrod diameter upgrade

Improve your McPherson damper by upgrading to a larger diameter shaft. The larger shaft has a more rigid and stronger strut construction which benefits when side loads are applied. Side loads are applied when cornering, or braking.


With the larger shaft your JRZ has a large oil displacement so the damper creates damping forces at the smallest movements of the suspension.

The combination of the larger shaft and the use of nitrogen pressure results in a lifting force created by the damper. This lifting force is available through the whole stroke of the damper and works together with the spring, the lifting force is not a spring rate, but gives the car platform. Upgrading to a larger piston rod benefits the lifting force.