MX Racing Gear Motocross Jersey & MX Jersey. How would I get my motocross MX shirts printed ? You can send us your custom motocross MX jersey design or artwork file; our designers will combine our jersey template with your design and send you a proof for your approval. After that, we will print them on sublimation paper and heat transfer them onto fabric by pressure. The design graphics on the sublimation paper will be incorporated into the fabric.