Bu♕sch suffe꧒red a concussion in qualifying at Pocono last year.

He had🉐 already confirmed that he wouldn’t return to ful💞l-time racing this year.

It was hoped Busch might feature in select races but he has now closed th𒀰e door on an epic career.

"Sometimes father time can catch 🍌up to your dreams," he said.

"My incredi🌃ble team of doctors and I have come to the conclusion that at this point in my recovery there are just too many obstacles for me to overcꩵome and get back to 100%.

"So after𝓀 23 years behind the wheel and 45 years of livi💙ng and breathing this dream, I am officially announcing my retirement from NASCAR Cup Series competition."

Busch is now ജ45, and is a 34-🐼time NASCAR race winner.

He ends his career with 7🅷76 C﷽up stars, the first of which was in 2000.

Busch is 25th on the list for all-time wins.