100-350 psi (factory setting is 220 psi).
Contact the dealer where you purchased the set or contact JRZ for advice.
If you are running at a high competitive level with competent drivers, engineering and staff, a 4 way damper is a powerful tool. For those that can use it, the 14 series gives the possibility to get the setup perfect for each condition.
Internal valving can be changed and is customized upon order or at a service center.