Description
Penske Air Dump Assembly
The new Air Dump Assembly allows you to create a digressive spring curve with any common spring. No more stacking springs or setting lock-out nuts. Simply tune your digressive point based on the amount of gas pressure in the assembly.
This patent-pending device has been run for the past two seasons in NHRA with tremendous success, and we are now finding great uses in other applications.
Uses
Our first use was on the 5th coil. This device allows you to run a stiffer spring rate, which gives the car more instant traction. The downside to normally running a stiffer spring is that as it compresses, the overall load becomes too stiff and you lose traction down track.
By using this device, as the stiffer spring compresses, the spring load becomes more powerful than the load the air assembly is producing. When this happens, the air dump gives way and releases two full inches of preload off the spring—essentially making it a softer rate farther into the travel.
See the example spring graph
This can also be used on the corner shock as well.
Compatibility: Works with all current Penske Shocks. No additional hardware needed.