Hey, Vigo44...welcome from Spain! According to our fitment information, the H-D Detachables Two-Up Luggage Rack fits '15 XG models only. (This part also requires a separate purchase of the Docking Hardware Kit P/N 52300285.) Also, please note that the fitment information shown on this site is for U.S. bike models only. Fitment may vary for H-D bikes sold in other countries. Your local dealer may be able to help you find a similar rack for your Nightster: www.h-d.com/dealer
. Thanks for your question.