Sigma Performance Services Racing (SPS Racing) has acquired AM Racing, which will allow them to take part in the NASCAR O'Reilly Auto Parts in addition to the ARCA Menards Series and an expanded late ...

Sigma Performance Services Racing, which has run a part-time ARCA Menards Series program over the last couple of seasons, is leaping to go full-time NASCAR O'Reilly Auto Parts Series racing in 2026.

A new legal dispute has emerged in the NASCAR garage, with former NASCAR O’Reilly Auto Parts Series AM Racing reportedly filing a lawsuit against Sigma Performance Services (SPS), alleging the ARCA ...