NASCAR 's secondary racing division, the Xfinity Series, will undergo a name change in 2026 as a result of a new sponsorship deal with O'Reilly Auto Parts. Xfinity has held the naming rights since 2015, but that will change next year to the NASCAR O'Reilly Auto Parts Series.

NASCAR announces multiyear partnership with O'Reilly Auto Parts as title sponsor of the sanctioning body's secondary series.

O’Reilly Auto Parts will become the title sponsor for NASCAR’s second-tier national series when the Xfinity Series is renamed.