Eli Tomac went into the season as the defending champion in the 450 class, after taking his fourth 450 national title in 2022.
[1] However, after an injury sustained during the 2023 AMA Supercross Championship Tomac did not defend his title.
[3] However, Lawrence moved up to the 450MX class, which meant he did not defend his title.
In his rookie season in the 450 class, Jett Lawrence recorded a perfect season by winning all 22 races.
His older brother, Hunter Lawrence, took his first American motocross title in the 250 class.