Kyle Busch Motorsports

The Kyle Busch Motorsports former race shop in Mooresville, North Carolina
Kyle Busch Motorsports in Mooresville
KBM was founded after Busch purchased the remaining assets of Xpress Motorsports from J.B. Scott (father of driver Brian Scott) in late 2009 as well as purchasing trucks from Roush Fenway Racing, which had closed its Truck team the previous year. Rick Ren, the crew chief on Ron Hornaday Jr.'s 2009 championship team, would be signed as the team's competition director. Busch had competed in the Truck Series for the 2008 and 2009 seasons in the No. 51 for Billy Ballew Motorsports with Miccosukee Indian Gaming as his primary sponsor, and had split the ride with Brian Ickler the previous year.

Busch brought Ickler to the KBM stable, and signed Tayler Malsam away from Randy Moss Motorsports after he finished second in series Rookie of the Year standings to former Cup and Busch/Nationwide driver Johnny Sauter. The team ambitiously planned to run three trucks in its debut season: Busch and Ickler would split the primary truck (No. 18), Malsam was to drive a second truck for KBM, the No. 56 ActivWater/Talking Rain Tundra, and a third was to be fielded for 2008 series champion Johnny Benson if sponsorship could be found. The Miccosukee sponsorship was to carry over to Busch's primary truck as part of an agreement with Phoenix Racing. On February 7, however, the Miccosukee tribe's new leadership pulled out of NASCAR altogether, leaving Busch's team and Phoenix's Cup and Nationwide series teams without sponsorship. Benson would also be limited to a part-time schedule with KBM and Ballew, and Malsam's team ceased operations after only seven races.

After operating out of the former Xpress shop for most of its first season, the team opened its new $10 million facility in Mooresville, North Carolina on October 14, 2010.

In 2011, KBM made its first foray into the then-Nationwide Series (now NASCAR Xfinity Series) in conjunction with NEMCO Motorsports. The team moved to full-time in 2012. On November 16, 2013, Busch announced that the team would not race in the Nationwide Series in 2014 due to lack of funding.

In December 2014, former competition director Rick Ren (released after 2013) filed a lawsuit against the team for breach of contract, claiming the team failed to pay him a contractual bonus and 10% commissions for two sponsorship deals Ren claimed to have procured for the team, totaling US$355,000. The sponsorships in question – Central Kentucky Angus Sales for driver Parker Kligerman and Sabala Whitetail for driver Brian Scott (owned by Scott's father J. B. Scott) – had prior associations with the drivers.

On January 25, 2021, Busch announced the team's late model program would be temporarily shut down in order to better manage his other obligations, though he did not rule out the possibility of a revival in the future.

After receiving engines from Triad Racing Technologies early in its history, KBM would ultimately receive engines and technical support from Joe Gibbs Racing through 2022.

After JGR and Toyota failed to secure a replacement for Busch's departing primary sponsor Mars, Incorporated after 2022, it was reported that Busch would depart from the team and manufacturer after 15 seasons. On September 13, 2022, Busch announced that he had signed with Richard Childress Racing to drive the No. 8 in the Cup Series in 2023, returning to Chevrolet for the first time since 2007. On November 4, 2022, KBM announced that Chase Purdy would pilot the No. 4 full-time in a multi-year deal beginning in 2023, the No. 51 would be shared by Busch, Jack Wood, and other TBA drivers, and a technical partnership with Rev Racing as they expanded into the Truck Series with 2022 ARCA Menards Series Champion Nick Sanchez piloting the No. 2 Chevrolet.

On September 27, 2023, it was announced that Spire Motorsports had purchased the assets of KBM, and that they would suspend their operations at the conclusion of the season, along with Busch