Longtime teammates, former rivals, and fans have expressed their grief following the sudden death of Kyle Busch, a two-time Cup Series champion, on Thursday at the age of 41. The racing icon was hospitalized earlier that day due to a severe illness, with no cause of death announced.

Renowned driver Denny Hamlin shared his shock on social media, stating, "Absolutely cannot comprehend this news… We love you KB." Fellow racer Ricky Stenhouse Jr. reflected on Busch's competitive spirit, saying, "He gave you everything he had, every single lap… Rest easy, Rowdy. The sport won’t be the same without you."

At the time of his passing, Busch was in his fourth season with Richard Childress Racing, ranking 24th in the Cup Series standings with two top-10 finishes in 12 races this season. He had recently won a NASCAR Truck Series race at Dover International Speedway and was set to compete in the Coca-Cola 600 in Charlotte, North Carolina.

Known as a polarizing figure in the sport, Busch's legacy includes both his impressive racing record and his feuds, notably with Joey Logano, who acknowledged Busch's impact on NASCAR, saying, "He is one of the best drivers to ever sit in a race car."

Dale Earnhardt Jr., a former rival turned friend, praised Busch as one of the "greatest drivers in NASCAR history," highlighting their journey from rivalry to friendship. Jeff Gordon, a Hall of Fame driver, emphasized Busch's passion, stating, "He was a champion and prolific racer who made a tremendous impact on NASCAR."

In recognition of Busch's influence, the NHL’s Carolina Hurricanes honored him with a video tribute and a moment of silence, while the Indianapolis Motor Speedway illuminated its scoring pylon with Busch’s image. Additionally, a foundation created by Busch and his wife received hundreds of dollars in donations to support couples seeking fertility treatments.