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Following a successful launch of the series in 2025, Quick Change Liquid Energy is excited to announce that we will continue and enhance our financial backing of the California 305 Sprint Series (formerly the California Regional Sprint Car Series) for 2026. In 2025, this...more

September 20th saw the California Regional Sprints invade the widely famous and notorious tracks that is the Tulare Thunderbowl as a support class for the World of Outlaws sponsored by NOS Energy Drink. We saw a season high 17 cars hit the track, and even one new guy on...more

Santa Maria Speedway was back on the track Saturday night with an action packed card of racing. California Regional 305 Sprint Cars, IMCA SportMods, Hobby Stocks and Coastal Creation Financial Mini Stocks were on hand. The night featured some first time winners and...more

As we head into the final three races of the 2025 California Regional Sprint Car Series Presented by Quick Change Liquid Energy, it’s impossible not to look back and realize just how historic this comeback season has been. From Antioch to Santa Maria, the 305 Sprint Cars...more