
RALEIGH, N.C. (WTVD) -- NASCAR star Kyle Busch is being remembered not only for his success on the track, but for his devotion to family and generosity off of it, following his sudden death Thursday at age 41.
Busch died at a Charlotte hospital just hours after it was publicly announced he had been admitted due to a severe illness. A cause of death has not been released.
A two-time Cup Series champion, Busch spent more than two decades in the spotlight, earning a reputation as one of the sport's most intense and competitive drivers. But those closest to him say that persona stood in contrast to who he was away from racing.
"Through the years, to see him battle and win these races and be such a fierce competitor, and then to see him away from the track, it's hard to believe it's the same person. I mean, what he did on that racetrack, he loved. He enjoyed it. He did it to an ability that I don't think anyone in our lifetime will ever get the chance to see again. He was the best of the best. But away from the racetrack, there was no softer, human or better person or someone more fun and enjoyable to be around," said Brandon Boyd, Busch's close friend and business partner.
Boyd spoke while traveling to Charlotte on Friday to be with Busch's family. The two met through their wives and quickly developed a close relationship.
"We became family, we did everything together. We wouldn't take a vacation without each other. In the past month, we just got back on a trip from Mexico, spending six days together," Boyd said.

He described Busch as deeply committed to his family.
"He's an amazing father. His children are just raised with so much respect and manners. He was a great husband to Samantha. They just had such a fun and just a happy marriage," Boyd said.
That focus on family was on display earlier in the week in Durham, where Busch attended the grand opening of Andretti Indoor Karting & Games. Naz Idoura said he was surprised to see the racing legend there.

"It was great. I saw Kyle with his son at the arcade games, and they're doing these shooting games and driving games and there was quality time. I can see them bond. I could watch it. I didn't want to bother them. That was amazing. Kyle's literally a family man. I saw it firsthand," Idoura said.
Shortly after Busch's passing, Idoura shared his experience on X, garnering strong reaction.
"I realize how many people are impacted by this. You have also my favorite driver in the NASCAR Cup Series who raced for Kyle Busch in the Truck Series. I discovered my favorite driver when he was driving for Kyle Busch. Just seeing all the social media, all the comments and stuff, it's even harder (to comprehend)," said Idoura.
Boyd said he last spoke with Busch around 3 p.m. Wednesday and that nothing seemed out of the ordinary. According to The Associated Press, Busch was testing in a racing simulator in Concord later that day when he became unresponsive and was taken to the hospital.
"It caught us all off guard because nobody was prepared for this. Nobody saw this coming. Nobody suspected this," Boyd said.
In addition to his family life, Boyd said Busch's acts of kindness often went unnoticed.
"In December, we all went to New York for Christmas, and there was a family in there on the sidewalk. And we had walked about two miles and now just turns around and goes back and takes it upon himself to help these people. And that's the story that that doesn't make the headlines. It doesn't make the Sunday night sports feature talking about the race on Sunday. But that's the kind of person that Kyle Busch was," Boyd said.
Busch is survived by his wife and two children.
Tributes have continued to pour in from across the racing world. In a statement Friday, Richard Childress Racing wrote:
Richard Childress Racing has elected to suspend use of the No. 8 and will run the No. 33 at Charlotte Motor Speedway and beyond. Kyle Busch was instrumental in the design of RCR's stylized No. 8 and it has become synonymous with Kyle and an important symbol for his fans and the NASCAR industry. No one can carry it forward to the level that he did. The No. 8 is reserved and ready for Brexton Busch when he is ready to go NASCAR racing.
"It's just so sad, but it's just such a reminder of how precious life is and how none of us should ever take tomorrow for granted," Boyd said.
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