Hellion 2024+ Ford Mustang GT / Dark Horse Street Sleeper® Hidden Twin Turbo System

Sold by Boschma's Speed Shop, an authorized Hellion Turbo dealer. Kit options, turbo upgrades, tuning and lead time vary by build. Call us at 608-481-2789 or email bandbracing@sbcglobal.net before ordering so we can confirm the right setup for your vehicle.

Welcome to the page of the legendary Hellion Street Sleeper® Mustang twin turbo system, the gold standard of turbo kits and built in the USA.

The highly anticipated Hellion twin turbo kit for the 2024+ Mustang GT and Dark Horse is here, and has been here since the S650 was released. We built the first production kit when the S650 came out, and we have the finest product you can purchase and bolt on.  Why did you buy this amazing car? One reason has to be the supercar-inspired dual throttle body intake! While supercharger kits delete this innovative power producer, the Hellion S650 Street Sleeper® kit keeps it and all of its glory. This new system comes standard with dual 4 into 1 headers and full flow dual inlet/outlet intercooler. Tuning is now available, and Hellion powered cars lead the way with power production and track results.

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 S650. There is no need to tap the oil pan or modify any factory sheet metal. The simple installation can be performed in just a day in most cases. An additional bonus with our system is that it can be used with a factory K member, no need to swap the K-member unless desired.

The base Street Sleeper® system is a tuner kit and comes with twin 62mm turbos. Hellion naturally offers a 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,  (62/62 1000+HP)  (62/62B 1200+ HP)  (64/66R 1700+ HP)  (68/70 2000+ HP)
• 4 into 1, 14 gauge stainless turbo headers – STANDARD
• 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 Hellion customer service