Gajser currently competes for the Gariboldi Honda motocross racing team managed by Giacomo Gariboldi. In the 2015 FIM Motocross World Championship season, he won his first world championship in the MX2. Gajser moved up to the MX1 class and won the 2016 MX1 Motocross World Championship. Gajser now currently competes under Team HRC and won the 2019 and 2020 season with them.