Due to his family's relocation at a young age, Wilson has spent the majority of his career competing in the United States, turning professional there in 2010.
Wilson began competing in local motocross races in his native Scotland at a young age and continued to do so after his family moved to Calgary in 1999.
[2] After having good results in Canada in the youth ranks, the family moved to California in 2006, where Wilson joined Kawasaki's amateur programme known as Team Green.
Despite being a rookie, Wilson finished sixth on his debut in Indianapolis, improving to fourth the in the following round and landing on the podium with third at his third professional start at Daytona International Speedway.
Riding with the number one plate as defending champion, Wilson had to pull out of the first race at the opening round of the year due to the injured shoulder popping out.
[13] The scale of the injuries meant he missed the remaining supercross season but did return for the AMA Motocross Championship, stepping up and making his debut in the 450 class for the first time.
In addition to this, Wilson competed in four rounds of the 450SX class that didn't clash with the 250SX West series, filling in for the injured Chad Reed on his Discount Tire Racing/TwoTwo Motorsports Kawasaki.
At the conclusion of the 2014 season, Wilson signed with the Red Bull KTM Factory Team to compete full-time in the 450 class on a two-year deal.
Towards the end of 2015, Wilson made his debut in the FIM Motocross World Championship when he rode as a wildcard at the season-ending MXGP of USA.
Wilson's second season in the factory KTM team had a similarly difficult start, when a crash in practice at the third round led to a torn ACL for the second year running.
[20] In the first four events he finished just outside the top-ten, which caught the eye of the Rockstar Energy Husqvarna Factory Racing team, who signed him from the fifth round onwards.
Continuing with the team in the 2017 AMA National Motocross Championship, Wilson was one of the front runners in the series, finishing all but two races within the top-ten and recording two overall podiums at Southwick and Spring Creek.
[22] After finishing fourth in the series, Wilson was selected for the British team at the 2017 Motocross des Nations, which would see him compete in front of his home crowd.
[23] When practicing for the outdoor season, Wilson collided with a slower rider mid-air and in the ensuing crash suffered another torn ACL injury.
The 2019 AMA Supercross Championship would see Wilson pick up another podium, this time in Houston, as he finished a position higher again in the final standings with sixth.
After five rounds of the 2020 AMA National Motocross Championship, Wilson sustained a slight tear in his left meniscus, which ruled him out for the remainder of the year.
[27] After recovering from the illness, Wilson's 2022 AMA Supercross Championship was brought to an end after thirteen rounds, with a big crash in St. Louis causing a laceration.
Following this, Wilson again competed in the FIM Supercross World Championship, dislocating his shoulder at the third round in a crash with long-time rival Vince Friese.