Air and Fuel Superchargers, Turbochargers and Components

Hellion

Street Sleeper Hidden Twin Turbo System

$7,995.00

SKU: HT-M21-SS

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In Stock
Ships by Aug 1
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Description

The Hellion Street Sleeper® Hidden Twin Turbo System is an innovative twin-turbo kit designed specifically for the 2021-2023 Ford Mustang Mach 1, offering a hidden turbo design for a stealthy appearance. This system is highly adjustable, capable of handling anywhere from 600 to over 2,000 horsepower with boost levels ranging from 5 to 40 pounds. Hellion highlights that no supercharger can match the potential of their twin-turbo setup. Constructed with American-made stainless steel piping, the system comes with a lifetime warranty. Key components include Hellion 62/62 turbos (with options for 62/62B, 64/66R, or 68mm), large vertical flow core intercooler, twin Turbosmart Comp-Gate 40 wastegates, and twin Turbosmart VEE port bypass valves. It also features heavy-duty silicone hoses, stainless steel T-bolt clamps, high-flow K&N air filters, and an exclusive Hellion oiling system for the turbochargers. All necessary hardware and a complete instruction set for installation are included. This is a tuner kit and does not include programming. The kit is designed as a true bolt-on system for the S550 platform, simplifying installation without requiring oil pan tapping or modifications to factory sheet metal. Installation can typically be completed in under a day. Hellion emphasizes that their turbo systems utilize spent exhaust energy for boost, avoiding the parasitic losses associated with superchargers, which translates to more power at the tires.

MIA's Description

The Hellion Street Sleeper® Hidden Twin Turbo System is a custom twin-turbo kit designed for the 2021-2023 Ford Mustang Mach 1. It offers adjustable boost levels from 5 to 40 pounds and can support performance from 600 to over 2,000 horsepower. The system is engineered as a true bolt-on, eliminating the need for oil pan tapping or factory sheet metal modification, with a simple installation that can typically be completed in under a day.

Fitment

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Specifications

BrandHellion
Part NumberHT-M21-SS
CategoryAir and Fuel

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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