Hellion Turbo’s Street Sleeper® system was built for Mustang owners who want serious power without giving away the secret under the hood.
FordMuscle recently highlighted Hellion’s hidden twin-turbo system for the S550 Mustang platform, calling attention to one of the most unique advantages of the Street Sleeper® design: massive turbocharged performance with a clean, factory-style engine bay appearance.
Instead of placing the turbos high and visible in the engine bay, Hellion’s Street Sleeper® system hides the twin turbos low and out of sight. With the hood open, the car can maintain the look of a clean Coyote-powered Mustang with a cold-air intake — while still having the horsepower potential to surprise just about anything in the other lane.
According to FordMuscle, Hellion’s Street Sleeper® system was designed for 2015+ Mustang GT applications and offers performance potential ranging from street-friendly boost levels to four-digit horsepower combinations. The system can be configured with multiple turbo options, including larger upgrades capable of supporting more than 2,000 rear-wheel horsepower with the right supporting combination.
Beyond the power potential, Hellion engineered the system with real-world usability in mind. The Street Sleeper® layout was developed for clean fitment, minimal intrusion, easier installation, and full adjustability. Standard features include twin turbos, dual Turbosmart wastegates, dual blow-off valves, a Hellion intercooler, stainless piping, and available upgrades for fuel, tuning, intercooling, boost control, and turbocharger selection.
The result is a true sleeper Mustang system: subtle when parked, serious when the boost comes in.
For enthusiasts who want hidden horsepower, turbocharged efficiency, and the ability to keep the competition guessing, Hellion’s Street Sleeper® system delivers exactly what its name promises.
Read the full FordMuscle feature to see how Hellion’s hidden twin-turbo system helped redefine sleeper performance for the modern Mustang platform.
