If you are buying or selling a bike, "papers" usually refers to legal ownership documents:
: You can find motocross-themed graph paper for schoolwork or printable writing pages for journaling [4, 7]. motocross
: Modern dirt bikes typically come with a Title or a Manufacturer’s Certificate of Origin (MSO) [1]. If you are buying or selling a bike,
: Retailers like Zazzle and Etsy offer a variety of gift wrap designs featuring dirt bikes and checkered flags [15, 26]. motocross