Ringbrothers reimagined one of Ford’s most iconic muscle cars with its latest creation, KINGPIN, a 1969 Mustang Mach 1 restomod that fuses handcrafted metalwork, modern engineering, and a dark, menacing aesthetic. Built over 5,500 hours, the Wisconsin-based builders combined the design of a 20th-century icon with 21st-century technology to create a machine that is as detailed as it is powerful.
At the heart of KINGPIN is a Wegner Motorsports 5.0-liter Coyote V8 topped with a Whipple supercharger, producing well over 800 horsepower. That power travels through a Bowler Transmissions Carbon Edition six-speed manual gearbox, while Ringbrothers’ custom-fabricated headers and a Flowmaster Super 44 stainless-steel exhaust give the engine its distinctive voice.
The chassis is a re-engineered Roadster Shop FAST TRACK Stage III platform that was converted back into a unibody for added rigidity. The Mach 1’s bodywork is widened 2 inches up front and 3.5 inches at the rear, and the wheelbase stretches an additional 1.5 inches to improve stance and handling.
“The Mustang Mach 1 has always been an aggressive-looking car, and the client was adamant about creating a sinister aesthetic,” Ringbrothers co-owner Jim Ring said. “We asked ourselves, ‘What would the final boss in a John Wick film drive?’ This was the result. Everything was cued off the Mustang’s original design, but we ramped up the drama, sharpened the lines, and added a number of one-off and 3D-printed details to make it truly stand out.”
That dramatic redesign is finished in a custom shade of BASF Bootleg Black accented by Grab-Her Green trim, which is an obvious tip of the hat to Ford’s classic Grabber Green, subtly shifted to enhance the car’s moody character. Wide Michelin Pilot Sport 4S tires on HRE Vintage Series 517 wheels complete the stance, while Fox RS single-adjustable coilovers and Roadster Shop independent suspension help KINGPIN stick to the pavement. Stopping power comes courtesy of massive Brembo brakes.
Handcrafted Detail
Every inch of KINGPIN highlights Ringbrothers’ craftsmanship. The body features a one-off carbon-fiber hood, grille surround, lower front valance, rear diffuser, and tail panel. Lowered rear quarter panels vent through the carbon-fiber tail, while the design’s flow emphasizes both aerodynamic function and visual aggression. The metalwork alone represents hundreds of hours of reshaping and refining Ford’s original lines into something that feels both timeless and contemporary.
Inside, the cabin showcases a mix of old-school style and new-school materials, with 3D-printed and machined trim, a custom Ringbrothers ENYO crushed-carbon steering wheel, Dakota Digital gauges, and a Vintage Air Gen IV Magnum climate-control system. Every surface is reinterpreted to feel like a modern evolution of the Mach 1’s cockpit while maintaining its unmistakable heritage.
“Over 5,500 hours went into building KINGPIN and perfecting its aesthetics. Every piece of this car has been touched and updated with sharpening the original design cues in mind,” Ringbrothers co-founder Mike Ring added. “There are a lot of nuances that went into the design, and we’re grateful for our team of trusted partners like BASF, GENTEX, HRE Wheels, and others for making it all possible.”
KINGPIN pushes the envelope of restomodding, and it will be interesting to see what the company does next.
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