TONI BREIDINGER Joins MHR No. 20 Development Entry for Select Truck Races

May 4, 2026

• TONI BREIDINGER lands MHR’s new No. 20 development ride for Watkins Glen (May 8) and Phoenix with Celsius backing. The 26-year-old Californian brings extensive ARCA, NCTS, and USAC experience to the fifth truck operation.
• Mason Massey joins the No. 20 rotation starting at Richmond in August with Mongoose Power Solutions. The Georgia native currently sits second in ARCA West points after winning his debut at Kern Raceway.
• Crew chief Ty Joiner and engineer Dewey Townsend lead the driver development program designed to build NASCAR ladder experience. Multiple drivers will rotate through the entry across varied track configurations throughout 2026.

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