We have not had the chance to test the Rhino-Rack roof racks on a 2014 Acura RLX at our facility yet, however, I spoke with my contact at Rhino-Rack and he verified that they have tested and confirmed that the Rhino-Rack RS 2500 Roof Rack, part # RRRS543B, will fit on your 2014 RLX.
I have attached a link to all of the roof racks that are confirmed to fit your vehicle for you to check out. view full answer...