Asian Le Mans - 4H of Sepang 2

The 4H of Sepang 2 represents the second round of the 2025-26 Asian Le Mans Series season at Sepang International Circuit. This endurance race brings together international teams competing across three categories at one of Asia's premier motorsports facilities. The Sepang International Circuit hosts two consecutive four-hour races as the opening rounds of the ASLMS season, establishing the championship battle for LMP2, LMP3, and GT competitors.

The Asian Le Mans Series

The Asian Le Mans Series enters its fourteenth season in 2025-26 with a record-breaking 48 full-season entries. The series features six four-hour endurance races across multiple countries. After the two races at Sepang International Circuit, the championship moves to Dubai and Abu Dhabi. This ASLMS season showcases 33 teams from 18 nations competing for class honors and overall victory.

Sepang International Circuit

Sepang International Circuit opened in March 1999 and was designed by Hermann Tilke. The circuit sits approximately 45 kilometers south of Kuala Lumpur in Selangor, Malaysia, near Kuala Lumpur International Airport. The track measures 5.543 kilometers per lap and features 15 corners, including five left turns and ten right turns. The layout combines long straights with slow, medium, and fast corners, creating opportunities for overtaking throughout the lap.

The facility can accommodate approximately 130,000 spectators. The circuit has hosted major international racing series including Formula 1, MotoGP, GT racing, and the Sepang 12 Hours. Alternative configurations include a 2.706-kilometer north circuit and a 2.609-kilometer south circuit.

Race Format and Categories

The 4H of Sepang 2 follows the standard four-hour endurance format established by the Asian Le Mans Series. Three categories compete simultaneously on track: LMP2 prototypes, LMP3 prototypes, and GT cars. Each class runs separate qualifying sessions before the race. Teams must manage fuel strategy, tire wear, driver changes, and traffic management across the four-hour duration.

LMP2 Class

The LMP2 category features approximately 16 entries competing for the fastest overall lap times and race victory. These purpose-built prototypes represent the top tier of ASLMS competition.

LMP3 Class

The LMP3 class includes approximately 10 entries and marks a significant milestone for the 2025-26 season. The series introduces third-generation LMP3 cars, all powered by the Toyota V35A 3.5-liter twin-turbo V6 engine. Every LMP3 competitor uses Michelin tires, creating a spec formula within this category.

GT Class

The GT category delivers the largest field with approximately 22 cars from seven manufacturers: Aston Martin, BMW, Corvette, Ferrari, McLaren, Mercedes, and Porsche. This variety creates close competition and strategic diversity within the GT class.

Participants and Teams

The 2025-26 ASLMS season attracts teams and drivers from across the globe. Rookie drivers are classified as those who have not competed in ACO Championships during 2025, including the Asian Le Mans Series, European Le Mans Series, or FIA World Endurance Championship. This definition helps identify emerging talent entering the series.

Technical Specifications

The LMP3 class operates as a controlled formula with all cars using identical Toyota V35A engines. This 3.5-liter twin-turbo V6 powerplant provides competitive parity across the category. Michelin supplies all LMP3 tires, further equalizing performance. The LMP2 and GT classes allow for more technical variation between different chassis and engine combinations, creating diverse competition strategies.

History at Sepang

Sepang International Circuit joined the Asian Le Mans Series calendar in 2013, initially hosting a three-hour race that replaced the previous round at Sentul International Circuit in Indonesia. The race format expanded to four hours starting in 2017. The event paused in 2021 and 2022 due to the COVID-19 pandemic before returning in 2023 with a two-race weekend format. This double-race structure continues for the 2025-26 season, with the 4H of Sepang 2 serving as the second race of the weekend at Sepang International Circuit.

The lap record at Sepang International Circuit stands at 2 minutes 04.149 seconds, set by Alessio Picariello driving a Craft-Bamboo Racing Mercedes-AMG GT3 in 2019. This benchmark demonstrates the pace achievable at this circuit for GT competitors in the ASLMS field.