Following the launch of the new Mercedes-AMG GT3, Mercedes-AMG has now come out with an updated GT4 model for the tenth anniversary season of its Customer Racing Programme. The new GT4 features new design characteristics and technical optimisations that, among others, enhance the endurance racing performance. Homologation is expected to be completed this month so customers can receive their cars soon.
In the past 2 years, the ‘little brother’ of the GT3 advanced to one of the most successful cars in the booming GT4 segment worldwide. So far, more than 120 units have been delivered to Customer Racing Teams all over the world. With the new edition of the GT4, Mercedes-AMG expects to give the teams even greater competitiveness.
Improved brake and engine cooling
The notable improvements of the new GT4 are in its optimised brake cooling around the front axle as well as enhanced engine cooling. Both the enlarged brake air inlet as well as the dimensionally stable brake air lines with larger diameter prevent the brake components from overheating. As a result, they ensure better driveability as well as considerably reduced wear of the brakes that are under particular load during endurance races.
Thanks to a new carbonfibre brake air duct, adapted heat protection and optimised brake caliper adapters, the airflow through the thermally affected parts has been improved. A newly developed brake disc on the front axle, aimed at reliability and longevity, complements the optimised brake cooling.
The re-arranged oil cooler contributes to an even more effective cooling of the proven AMG 4-litre V8 biturbo engine, just like the new carbon exhaust air duct and the newly shaped edge on the bonnet, made of natural fibre enforced material. As a result, the Mercedes-AMG GT4 can reliably deliver its performance, even in extremely hot conditions.
New light concept
The update of the GT4 also includes optimised front and rear lights, identical to the corresponding GT3’s. Their design is in line with the current Mercedes-AMG GT road cars. Next to the facelifted look, the new light concept also comes with a practical purpose: the new LED high-performance headlights provide considerably better illumination of the track. In darkness or in poor visibility, this can lead to decisive advantages for the drivers in terms of safety and performance.
Optimised handling
Another optimisation are the modified track rods on the rear axle that are also similar to those used on the new GT3 model and that come with a significantly extended longevity. As a result, the that has, among others, already racked up three class wins in the Nurburgring 24-hour race, is even better prepared for endurance races in the toughest conditions. The integration of an enlarged brake fluid tank, optimised with the particular requirements in endurance races in mind, is also one of the changes in the 2020 GT4.
Highest safety standards
Like its road cars, the GT4 has particularly high safety standards relevant to track racing. The roll-cage of high-tensile steel has been bolted to the aluminium spaceframe and a recovery hatch has been integrated into the roof of the car. The carbonfibre driver safety cell with integrated headrest provides a considerably higher level of protection than usual racing seats. A powerful fire extinguishing system complements the comprehensive safety concept.
Stefan Wendl, head of Mercedes-AMG Customer Racing: “When we entered the GT4 segment two years ago, it was our aim to build a car that was capable of winning right away. Looking at the achievements of the Mercedes-AMG GT4, we have succeeded in doing so in an impressive way. In order to enable our Customer Racing Teams to accomplish such top achievements at the race track in the future as well and to be prepared in the best way for the challenges in newly entered markets like Asia and South America, we have now decided to update the Mercedes-AMG GT4.
