Hellion 2018+ Ford Mustang GT Sleeper – Complete Emissions Tested Twin Turbo System-Call for price


Additional information


  • Catalytic Converters Core Charge *

    OEM driver and passenger side catalytic converters are required for the kit. Contact Hellion to schedule and for shipping info. Core charge is refunded once items are received and inspected.

  • Additional Options *

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Hellion Power Systems is a turbocharger specialist with one goal – produce and develop the finest bolt-on turbo kits in the industry and back that with outstanding customer service. Since 2004, the company’s core business has been building record setting turbo systems and keeping customers at the forefront of turbocharging technology.

HP Capable
Proudly Made In The U.S.A.
Improved Performance
Bolt-On Turbo System
Lifetime Warranty



Hellion has done it again! Building on the success of our popular Sleeper turbo system for the S550 Mustang, Hellion has designed an all-new COMPLETE twin-turbo system that is emissions tested and compliant. This new system retains the use of OEM catalytic converters, and is optimized to minimize backpressure and losses. After the first drive, you’ll walk away thinking this is how the S550 Mustang should have came from the factory showroom floor. So now you can have your cake and eat it too– with a powerful but reliable twin-turbo system that is street legal!

This system places the turbos in a hidden location. No supercharger can even come close to the potential of a Hellion Twin Turbo. One of our most common conversations with our customers is “I’m pulling off my supercharger and purchasing a Hellion kit. I just can’t keep up with other Hellion cars.” You just can’t beat the power of a twin turbo Mustang.

With over 20 years in building turbo systems, Hellion has designed a true bolt-on system for the S550. There is no need to tap the oil pan or modify any factory sheet metal. The simple installation can be performed with simple hand tools.

The benefits of a twin turbo system go beyond the awesome looks and sounds of a pair of turbos–no other power adder can deliver the crushing power and torque a Hellion twin kit can.  While superchargers drag the engine down constantly with parasitic losses through a belt, a turbo setup uses spent exhaust energy to make boost–no extra losses!  This equals more power to the tires and faster times!

Equipped with:

  • STEEDA (Hellion specific) S550 bolt on K member – STANDARD
  • 4 to 1 stainless turbo headers – STANDARD
  • Hellion 62/62R ball bearing turbochargers – STANDARD
  • 3″ turbo exhaust outlets retain use of OEM catalytic converters
  • Twin Turbosmart bypass valves
  • Large vertical flow core intercooler (highest flow bar/plate core available — full sheetmetal construction)
  • Comes “complete” with ECU flashing device and supplied tune
  • American-made stainless steel piping (comes standard with a lifetime warranty)
  • Heavy duty silicone hoses for all connections
  • Stainless steel T-bolt clamps
  • Exclusive “industry leading” Hellion oiling system for turbochargers
  • All necessary bolts, nuts, hardware needed for installation
  • Complete instruction set to assist with at “at home” installations
Make Model Year
Make Model Year
Ford Mustang GT 2018-2023

DISCLAIMER: Hellion’s products are sold for competition vehicles only and are not legal to be sold or installed in the state of California. All performance modifications and installations are at the customer’s own risk and Hellion holds no responsibility for any consequences, legal, or other, of such use and/or misuse.

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