JRZ MOTORSPORT 14 Series Porsche 911 997 GT3

Compression and rebound independently adjustable. High speed rebound adjusted by a blow off valve on the piston rod and low speed by orifices. High and low speed compression adjusted by blow off valve in the canister and adjustable orifices.

Above is the compression adjustment range of a typical JRZ 14 series. The blow off system, innovated by JRZ, is seen moving the opening point of the valve up and down. The full range is useable and each step is a fine yet noticeable increment.

Above is the low speed compression adjustment range of a typical JRZ 14 series. The low speed adjustment, innovated by JRZ, is seen by the changing angle of the force line. The low speed adjustment is usable at every high speed click. 

Sprung mass is controlled with rebound damping, delivered smoothly by the 8060 motorsport piston. The 14 series rebound system and 8060 piston provides a linear damping characteristic with smooth pressure development independent of compression forces. The addition of the low speed adjustment allows finer tuning of the sprung mass movement during weight transfer events. This allows the engineer to fine tune individual dynamic loads, maximizing traction and tire wear.

Above is a graph of the rebound adjustment range of a typical JRZ 14 series. It can be seen that the steps are even, the range is large and the curve is smooth. This allows the chassis to be tuned predictably, step by step.

Above is the low speed compression adjustment range of a typical JRZ 14 series. The low speed adjustment, innovated by JRZ, is seen by the changing angle of the force line. The low speed adjustment is usable at every high speed click. 

Control is achieved by using compression damping controlling the movement of the unsprung mass. By doing this the car will take kerb stones or road bumps extremely well and the car will not be unsettled with great control for the driver.

Using compression damping to control the unsprung mass will result in less tyre wear and better tyre temps. The unsprung mass will move according the tyre’s natural frequency. Using the compression damping the contact patch of the tyre to the road will be maximized.

Damping is available over a large adjustment range with fine tuning increments. Set up is easy to find and spring rates can be changed without having to revalve the damper

The combination of the 22 mm 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 springrate, but gives the car platform.