Monster Energy AMA Supercross Championship
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The AMA Supercross Championship is an American motorcycle racing series. Founded by the American Motorcyclist Association in 1974, the AMA Supercross Championship races are held from January through early May. Wikipedia
Teams' champion: Team Honda HRC
Classes: 450SX; 250SX East; 250SX West; 250SX Futures; KTM Junior
Inaugural season: 1974
Riders' champion: •450cc: Chase Sexton •250cc East: Hunter Lawrence •250cc West: Jett Lawrence