Technically I’ve got an xp4 1000, but this page gets a bit more traffic. Im trying to get an idea if anyone knows the spring rates and length(s) for the racer tech replacement spring kit?

Their calculator recommends I use "medium" springs form them, but without knowledge of the rates I have a hard time making an educated decision. In the past to gain high speed stability, or performance, my low speed "plushness" would be sacrificed.

Hoping to accomplish both as I may ride 15 MPH with my daughter in the machine, or have 4 full sized adults hitting whoops as fast as I can.