JR Motorsports is a NASCAR team based in Mooresville, North Carolina, co-owned by NASCAR Sprint Cup driver Dale Earnhardt, Jr., his sister Kelley Earnhardt Miller, cousin and former crew chief Tony Eury, Jr., and the owner of his Cup ride Rick Hendrick. It currently fields the No. 5 TaxSlayer.com/Unilever Chevrolet Impala part time for Dale Earnhardt Jr., the No. 7 GoDaddy.com Chevrolet Impala for former IZOD IndyCar Series driver Danica Patrick and the No. 88 Unilever/TaxSlayer.com Chevrolet Impala driven by Cole Whitt in the NASCAR Nationwide Series.

JR Motorsports began in a shed on the property of Dale Earnhardt, Inc. in 1998 with just one employee, as the marketing division of Dale Earnhardt, Jr.'s race team. The original intent of the business was to help Earnhardt, Jr. sell t-shirts and negotiate sponsorship deals.^{[citation needed]} It wasn't until 2002 that Earnhardt, Jr. turned the business into a race team, when T. J. Majors drove street stock division at Concord Motorsport Park, in North Carolina. The first win for the team came at Motor Mile Speedway in Radford, VA, in 2004. (At the time, Earnhardt, Jr. was co-owner of another racing venture, Chance 2 Motorsports.)

Ralph Dale Earnhardt, Jr. (born October 10, 1974), better known simply as Dale Earnhardt, Jr., is a professional American race car driver and team owner who drives the No. 88 Diet Mountain Dew/United States National Guard/7-Eleven Chevrolet Impala in the NASCAR Sprint Cup Series for Hendrick Motorsports, and drives the No. 5 Chevrolet Impala for his own team, JR Motorsports, in selected events in the Nationwide Series. He is the son of NASCAR Hall of Famer Dale Earnhardt, Sr., and the grandson of both NASCAR driver Ralph Earnhardt and Robert Gee, the well known stock car fabricator. Earnhardt, Jr. is also the half-brother of former driver Kerry Earnhardt, the uncle of driver Jeffrey Earnhardt, and the stepson of Earnhardt Ganassi Racing team co-owner Teresa Earnhardt. Earnhardt, Jr. has won the Most Popular Driver Award nine times. He has an estimated net worth of $300 million.

He was raised in Kannapolis, North Carolina, Dale Jr. is the son of Ralph Dale Earnhardt, Sr. and Brenda Lorraine (née Gee; born January 2, 1952). His maternal grandfather, Robert Gee, Sr., was a NASCAR car builder. Dale Earnhardt Jr. attended college and earned a 2 year automotive degree in Mooresville, North Carolina.

Ralph Dale Earnhardt, Sr. (April 29, 1951 – February 18, 2001) was an American race car driver, best known for his involvement in stock car racing for NASCAR. Born to race car driver Ralph Lee Earnhardt, Earnhardt began his career in 1975 when he drove in the 1975 World 600 at Charlotte Motor Speedway as part of the Winston Cup Series (later the Sprint Cup Series).

During the course of his career, Earnhardt won a total of 76 races (including one Daytona 500 victory in 1998). He earned seven championships, which is tied for the most all time with Richard Petty. His aggressive driving style earned him the nickname "The Intimidator".

While driving in the 2001 Daytona 500, Earnhardt died of basilar skull fracture in a last-lap crash at Daytona International Speedway on February 18, 2001. He has been inducted into numerous halls of fame, including the inaugural class of the NASCAR Hall of Fame.

Earnhardt was born in Kannapolis, North Carolina, on April 29, 1951, to Martha Coleman and Ralph Lee Earnhardt, who was then one of the best short-track drivers in North Carolina. Ralph won his one and only NASCAR Sportsman Championship in 1956 at Greenville Pickens Speedway in Greenville, South Carolina. Although Ralph did not want his son to follow in his footsteps, Earnhardt would not be persuaded to give up his dream of racing, dropping out of school to race. Ralph was a hard teacher for Earnhardt, and after Ralph died of a heart attack at his home in 1973, it took many years before Earnhardt felt as though he had finally "proven" himself to his father. Earnhardt had four siblings, Danny, Randy, Cathy, and Kaye.

Steve Letarte (born May 14, 1979) is an American NASCAR crew chief. Born in Cornish, Maine, he is currently employed at Hendrick Motorsports as the crew chief for the No. 88 Sprint Cup Series Chevrolet, driven by Dale Earnhardt, Jr.. He first began as crew chief for Jeff Gordon when he took over the job of the No. 24 DuPont Chevrolet from Robbie Loomis in September 2005.

Letarte began working for Hendrick Motorsports part time in 1995. In 1996, at the age of 16, he joined the group full-time. From 1997 to 1999, he worked as a tire specialist for the #24 team. He then became a mechanic and finally car chief in 2002.

Letarte was promoted from car chief to crew chief after the #24 DuPont Chevrolet missed the 2005 Chase for the NEXTEL Cup. He was promoted after 26 of the 36 races in the 2005 season.

In his sixth race as crew chief with Gordon, he visited victory lane for the first time in October 2005, winning the Subway 500 at Martinsville Speedway, in Martinsville, Virginia. The #24 improved with three top-five finishes in the last five races of the 2005 season.

Jeffrey Earnhardt (born June 22, 1989) is an American stock car driver. He is the grandson of the late Dale Earnhardt and son of former NASCAR driver Kerry Earnhardt. He currently competes for Rick Ware Racing in the Grand-Am Rolex Sports Car Series and the NASCAR Nationwide Series.

Jeffrey Earnhardt is the middle child of Kerry Earnhardt, grandson of Dale Earnhardt and the great-grandson of Ralph Earnhardt and nephew to Dale Earnhardt Jr.

Earnhardt's first race came in the Hornet Division at Wythe Raceway in Rural Retreat, Virginia. He scored 3 feature wins and finished in the top 5 in division points, winning Rookie of the Year. The following year he moved up to the Sportsman division at the Motor Mile Speedway in Radford, Virginia, finishing the season in the top 10 of the division standings. He also competed in the late model season finale at the track as a teammate to RCR developmental driver Allison Duncan.

In 2006, General Motors created a driver developmental search program wherein they looked for individuals they believed to be the stars of the future and invited them to test a late model and a Busch car at 2 different tracks with the best moving on. Jeffrey made the final cut.