Jeff Stec is an entrepreneur and NASCAR team owner.
He was a member of the Mu Tau chapter of the Kappa Sigma fraternity, and graduated from Austin Peay State University in 1993 with degrees in exercise science and business management. He soon worked his way up through the ranks and formed Peak Fitness in the Charlotte area in 1999 and began expanding it into a national fitness club franchising company early in 2005.
In 2005 Stec also purchased SCORE Motorsports to field the #66 Ford sponsored by Peak Fitness, with Hermie Sadler and Mike Garvey running the car.
In the 2006 season, the Peak Fitness Racing team changed numbers from #66 to #61 to allow Haas CNC Racing to use the #66 for their Best Buy Sponsorship. The team also tabbed Kevin Lepage for the 2006 season driving duties. In the first quarter of 2006 Stec sold the #61 team to Front Row Motorsports.