Spec Design Company introduced its 2026 Ford F-150 RS/X at the 2025 SEMA Show in Las Vegas. This turnkey truck features a boosted 1,000-horsepower Coyote engine, making it one of the most powerful street trucks today.
The RS/X is limited to just 25 units, each custom-built to match the owner’s exact vision using SPEC Design’s in-house design program. This Texas-based builder showcased the truck at the Magnuson Superchargers booth during the event.
Mike White, founder of SPEC Design Company, said: “The RS/X is pure obsession. We set out to prove how far a dealer-sold truck can go — beyond performance packages or simple appearance mods. This program is built for owners who want a piece of mechanical art — a regular-cab truck that strikes like a supercar and feels truly one-of-one. Every detail is custom-engineered to reflect its owner’s vision. This program is personalized from start to finish. We’re not just delivering performance — we’re creating rolling art that’s engineered and hand-finished here in Texas.”
At the core of each RS/X lies a hand-assembled 5.0-liter Coyote engine equipped with a Magnuson supercharger, tuned to produce an impressive 1,000 horsepower. The package is enhanced with Kooks headers and a Corsa Performance exhaust, delivering both aggressive sound and formidable power.
The 2026 Ford F-150 RS/X by SPEC Design offers a limited-edition, customizable supercharged truck that blends extreme performance with personalized craftsmanship, redefining what a street truck can be.