Put Boost On Display With The New S650 System From Hellion Turbo

Hiding a pair of turbochargers underneath a Mustang is great for surprising unsuspecting rivals on the street, but plenty of S650 owners would rather show off their boosted hardware. Answering that call at the 2026 SEMA Show, Hellion Turbo pulled the wraps off its new R-Series top-mount twin-turbo system on a sinister Mustang Dark Horse.

While the company’s popular Street Sleeper kit keeps everything tucked beneath the chassis, this new option puts a pair of reverse-rotation snails right on top of the Coyote V8.

Bringing the turbos into the spotlight required a fresh approach to exhaust routing and underhood packaging.

Rather than reusing the large 4-into-1 collector headers from the hidden kit, owner John Urist and his engineering team designed compact, forward-facing exhaust manifolds.

That layout positions the reverse-rotation turbos neatly at the front of the engine bay alongside dual 45 mm Turbosmart wastegates and 3-inch exhaust piping.

Out of the box, the standard 62 mm turbochargers can support roughly 1,200 horsepower, and an optional 64 mm upgrade is on the menu for builders hunting even wilder numbers.

Time constraints before SEMA kept the Dark Horse display car off the rollers prior to Vegas, though it is scheduled to hit the dyno right after the show closes its doors. Offered initially as a tuner kit, the system gives owners the freedom to match fuel and engine management parts to their specific goals.

Palm Beach Dyno remotely calibrated the SEMA showpiece, and Hellion Turbo backs the hardware with an extensive dealer network to handle custom tuning for every build.

Beyond the visual punch of popping the hood at a car show, the R-Series brings a raw mechanical soundtrack that quiet street kits intentionally muffle.

Its screamer-style wastegate setup lets everyone nearby hear the turbos spool and vent under heavy throttle. Carrying a debut price tag of $11,995, the top-mount package costs slightly more than the standard Sleeper setup due to the extra development and visible hardware.

Customers looking to bolt this rowdy setup onto their S650 Mustang can expect Hellion Turbo to start shipping complete kits out to buyers in February of next year.