As with the XHD springs, these will have a custom-order lead time AND we recommend a minimum of a 2.5″ Remote Reservoir shock to support the massive spring rates and load capacity of these springs. Unfortunately, we do not have these tuning profiles for the Ram – we’ll need to get a local truck with these springs in to develop this tune for the XHD, time permitting. If you have a local shock tuner that can dial these in, that would be ideal.