FAS 800 Performance Package | Trackhawk/Durango

The FAS 800 Performance Package for the Jeep Grand Cherokee Trackhawk and Dodge Durango SRT Hellcat is a comprehensive, turn-key build designed to push these performance SUVs to a reliable 800 wheel horsepower while maintaining the factory-level drivability and refinement that makes them so enjoyable as daily drivers. Both the Trackhawk and Durango SRT Hellcat are powered by the 6.2L supercharged HEMI engine, making them an ideal platform for this proven FAS performance upgrade. The package includes a custom pulley kit to increase supercharger boost pressure, high-flow cooling system upgrades to reduce intake air temperatures and protect the engine under hard use, and an ECU unlock that removes the factory power limitations and enables full custom calibration. Supporting fueling and ignition upgrades ensure safe and reliable power delivery across the operating range. Following hardware installation, each vehicle receives a full custom dyno tune by the F.A.S. Motorsports team, optimizing all engine parameters for maximum performance with the specific fuel and components on that build. The result is a smooth, predictable power curve ideal for towing, street driving, and track use alike. This package is a complete solution installed and backed by F.A.S. Motorsports, ensuring every Trackhawk or Durango owner gets a build they can count on.