P1 Engines brings home a pair of victories at California ProKart Challenge

P1 Engines drivers rebound to top the blocks at round four this past weekend.

California ProKart Challenge enters second half of 2018

Yu and Musgrave repeat for Round Four of Superkarts! USA flagship regional program.

Big Numbers and Exciting Racing for California ProKart Challenge at CalSpeed

Musgrave earns third straight in S1 as Yu becomes third different winner in X30 Senior.

Musgrave and Drew tame Streets of Willow during California ProKart Challenge Weekend

Superkarts! USA flagship regional program holds second round of 2018 on fast road course.

California ProKart Challenge Resumes at Streets of Willow

Second event for Superkarts! USA flagship regional program set for March 30-31

Coast to Coast Success for Rolison Performance Group

Victories in California followed up by podiums in Florida in back-to-back weekends.

First winners of 2018 California ProKart Challenge decided

Championship season gets underway with exciting opening round of Superkarts! USA flagship regional program at Buttonwillow

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