“KINGPIN” was a highlight of the SEMA 2025 show, and RacingJunk got a chance to get an in depth walk around the bold build.
Ringbrothers, the world-renowned custom car builder and parts manufacturer, has revealed its latest masterpiece, “KINGPIN,” at the 2025 SEMA Show in Las Vegas. The “KINGPIN” Mustang took on a complete reimagining of the legendary Mach 1, featuring more than 5,500 hours of build time and over 800 horsepower. Usually the madmen at Ringbrothers have something a little more off the wall. This time they went with a classic muscle car to mold from.
Under the hood, KINGPIN is powered by a Wegner Motorsports 5.0-liter Coyote V8, topped with a Whipple supercharger, which delivers over 800 horsepower. A Bowler Transmissions Carbon Edition six-speed manual gearbox sends power to the rear wheels. At the same time, custom Ringbrothers headers and a Flowmaster Super 44 stainless-steel exhaust provide a throaty soundtrack worthy of the build.
The Roadster Shop FAST TRACK Stage III chassis has been heavily modified, converted back to a unibody configuration, and paired with widened bodywork—two inches at the front and 3.5 inches at the rear. The wheelbase was stretched by 1.5 inches, with a one-off roll cage adding structural rigidity and safety. HRE Vintage Series 517 wheels wrapped in Michelin Pilot Sport 4S tires, Fox RS coilovers, independent front and rear suspension, and massive Brembo brakes ensure that KINGPIN performs as ferociously as it looks.
“The Mustang Mach 1 has always been an aggressive-looking car, and the client wanted a sinister aesthetic,” said co-owner Jim Ring. “We asked ourselves, ‘What would the final boss in a John Wick film drive?’ This was the result.”
The body is finished in a custom BASF Bootleg Black, accented by Grab-Her Green trim—a clever twist on Ford’s iconic Grabber Green. Carbon-fiber components are found throughout, including the hood, rear diffuser, tail panel, and valance. Inside, KINGPIN features custom upholstery, machined and 3D-printed brightwork, Dakota Digital gauges, a Vintage Air Gen IV Magnum climate system, and a crushed-carbon Ringbrothers “ENYO” steering wheel.
“Over 5,500 hours went into perfecting KINGPIN,” added co-founder Mike Ring. “Every line, every detail was sharpened to respect the original design while pushing its limits. We’re grateful to our partners—BASF, GENTEX, HRE Wheels, and others—for helping bring this vision to life.”
RacingJunk had a chance to catch up with Ryan Fielding of Ringbrothers at SEMA 2025 and do a walk around of Kingpin:
Ringbrothers offers a wide range of Mustang components, from billet-aluminum parts to steering wheels and lighting accessories. For more information, visit www.ringbrothers.com.