Jett vs. Hunter Challenge | Lawrence Brothers Face Off , With two 250 supercross titles, a 450 World Supercross Championship, a 250 motocross championship and an unprecedented, undefeated 450 motocross title-winning season between them in a single calendar year, it’s safe to say 2023 has been good to Jett and Hunter Lawrence. It’s no stretch to argue that the boys are already the most dominant brothers in the history of motocross. Internet Videos