A partnership between Sepang International Circuit (SIC) and Top Speed marks the return of the Sepang 12 Hours to the circuit from March 16–18, 2023. This partnership combines 20 years of experience in endurance racing, a specialty in Asia, and a floodlit FIA Grade 1 circuit. The last edition was held in 2016.

Motul Lubricants is the Official Lubricant Supplier, while Hankook Tire is the Official Tire Supplier across all race categories in the Sepang 12 Hours.

The Sepang 12 Hours is an endurance race for GT3 and touring car classes that typically lasts for 12 hours. Teams compete against each other to achieve the best overall time. The race is part of the Intercontinental GT Challenge and draws top-level motorsports teams and drivers from both local and international locations. Interesting line-ups are forming at the starting grid.

The 5.543-kilometer circuit features a one-of-a-kind track layout with a mix of long straights and a technical middle section, allowing for plenty of overtaking opportunities and making it an exciting location for motorsports events.