

Hellion 2018-2023 Ford Mustang GT Street Sleeper® Hidden Twin Turbo System
Hellion 62/62 turbos standard. Does not include programming.
The legendary Street Sleeper® Mustang twin turbo system, also known as the gold standard of turbo kits.
Years ago, Hellion recognized the popularity of huge horsepower cars with the ultimate “sleeper” image, they designed the most innovative twin-turbo system in history — the Street Sleeper®! They listened to the customers who desired a different design for the S550 Mustangs. This new system places the turbos in a hidden location. It is a twin-turbo system that is fully adjustable from 5 to 40 pounds of boost, and performance levels anywhere from 600 to over 2,000 horsepower!
This the the most powerful system available for the Mustang, period. No supercharger can even come close to the potential of a Hellion Twin Turbo. You just can’t beat the power of a twin turbo Mustang.
With over 25 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 in under a day in most cases.
While the base Street Sleeper® system is a tuner kit with entry-level 62mm turbos, Hellion naturally offers a massive number of available upgrades, including choice of turbo size, fuel system upgrades and even complete blackout packages.
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:
- Multiple T4 turbo options available (twin 62/62B, 64/66R, 68mm)
- Large vertical flow core intercooler standard with the highest flow bar/plate core available — full sheet metal construction, built right here in America with gorgeous welding and craftmanship. No ugly knock offs here.
- Twin Turbosmart Comp-Gate 40 wastegates
- Twin Turbosmart VEE port bypass valves
- AMERICAN MADE Stainless steel piping (comes standard with a lifetime warranty)
- Heavy duty silicone hoses for all connections
- Stainless steel T-bolt clamps
- High flow K&N air filters
- Exclusive “industry leading” Hellion oiling system for turbochargers (NO annoying constant need to grease underperforming turbochargers or cheap electric pumps to fail)
- All necessary bolts, nuts, hardware needed for installation
- Complete instruction set to assist with at “at home” installations, supported by reliable customer service
Specifications:
- 2000 HP Capable
- Proudly Made in the U.S.A.
- Improved Performance
- Bolt-On Turbo System
- Factory Fitment
- Unsurpassed Technical Support
- Lifetime Warranty
Hellion's products are sold for off-road use 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.
The legendary Street Sleeper® Mustang twin turbo system, also known as the gold standard of turbo kits.
Years ago, Hellion recognized the popularity of huge horsepower cars with the ultimate “sleeper” image, they designed the most innovative twin-turbo system in history — the Street Sleeper®! They listened to the customers who desired a different design for the S550 Mustangs. This new system places the turbos in a hidden location. It is a twin-turbo system that is fully adjustable from 5 to 40 pounds of boost, and performance levels anywhere from 600 to over 2,000 horsepower!
This the the most powerful system available for the Mustang, period. No supercharger can even come close to the potential of a Hellion Twin Turbo. You just can’t beat the power of a twin turbo Mustang.
With over 25 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 in under a day in most cases.
While the base Street Sleeper® system is a tuner kit with entry-level 62mm turbos, Hellion naturally offers a massive number of available upgrades, including choice of turbo size, fuel system upgrades and even complete blackout packages.
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:
- Multiple T4 turbo options available (twin 62/62B, 64/66R, 68mm)
- Large vertical flow core intercooler standard with the highest flow bar/plate core available — full sheet metal construction, built right here in America with gorgeous welding and craftmanship. No ugly knock offs here.
- Twin Turbosmart Comp-Gate 40 wastegates
- Twin Turbosmart VEE port bypass valves
- AMERICAN MADE Stainless steel piping (comes standard with a lifetime warranty)
- Heavy duty silicone hoses for all connections
- Stainless steel T-bolt clamps
- High flow K&N air filters
- Exclusive “industry leading” Hellion oiling system for turbochargers (NO annoying constant need to grease underperforming turbochargers or cheap electric pumps to fail)
- All necessary bolts, nuts, hardware needed for installation
- Complete instruction set to assist with at “at home” installations, supported by reliable customer service
Specifications:
- 2000 HP Capable
- Proudly Made in the U.S.A.
- Improved Performance
- Bolt-On Turbo System
- Factory Fitment
- Unsurpassed Technical Support
- Lifetime Warranty
Hellion's products are sold for off-road use 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.