I've sold my Deluxe so now time to part with the spring seat I fitted.  My Deluxe was a 2019 model and yes, this DOES fit it, regardless of what the book says.  I paired the base with the old look HD tractor seat.  Seat part # 52004-25 (@$450 new). and the base part # 52100029 (@$350 new).  Please don't ask if it will fit your bike - I don't know! Selling both for $500. 0417 267 750