Contested with drivers often from the United Kingdom, Netherlands, America and New Zealand the championship winner shall be invited to compete in the BriSCA Formula 1 Stock Cars World Championship along with the winner of the New Zealand Superstock Championship in a fully funded campaign.

The current champion is Ethan Rees from gisborne who won in 2023 The titles is unique to other superstocks racing championships with the 240s event allowing for a number of drivers to become pre-qualified to the finals field of 26 drivers.

This makes the 240 championship one of the most difficult titles to master, as spots within the finals field became scarce with 5 international drivers being automatically seeded to the finals together with the defending 240s champion and with the winner of the second tier championship held on finals night.

Held over just 3 races of 15 laps, the need for the best possible points result is a must with even 1 DNF making it nearly impossible to win the title.

Current Speedway New Zealand rules stipulate the engine must be no larger the 248 cubic inches, with teams using small block V8 race engines.