The Hallman Pro RX Kit contains the Hallman Pro valve with a ceramic ball, both light AND heavy (standard) springs, 3 feet of hose, mounting bracket, hardware packet, and complete installation instructions.
The RX kit has a ceramic ball instead of the 316 stainless ball that comes in the Hallman Pro and Hallman ES valves. The ceramic ball weighs a fraction of what the stainless steel balls weighs. This weight difference allows the ceramic ball to act very quickly as it is constantly changing directions during operation. This helps to minimize spiking, particularly when used with applications that produce lower boost.
The RX kit also includes a light spring. The light spring allows for very fine adjustment of boost up to 4 to 5 pounds of boost over "stock". Boost can be adjusted in as little as half pound (.5 PSI) increments very consistently with this valve.
The combination of the ceramic ball and the light spring make the Hallman Pro RX kit very well suited for the turbo enthusiast that wants to add a few psi of boost over stock, and have a great amount of control over those few pounds.
While this kit comes with the light spring already installed, it also includes the heavy (standard) spring (that is found in the Hallman ES Kit and Hallman Pro Kit) for customers that would like to switch to the heavier spring and adjust to more than 5 psi of boost over stock, yet still take advantage of the quick-acting qualities of the ceramic ball. This is particularly helpful if your turbo system is only designed to allow increasing the boost a "small" amount now, but you modify your system to allow for higher boost levels in the future. Switching to the heavier spring allows the Hallman Pro RX Kit to "grow" with the rest of your turbo system!
Available in Black or Red.