Ringbrothers is back at SEMA with a bruiser that oozes menace from every angle. Meet Kingpin, a 1969 Ford Mustang Mach 1 that blends meticulous craftsmanship with a wicked sense of style and a powertrain that clears the 800 horsepower bar. It is a return to the Wisconsin shop’s muscle car roots and a reminder of why their SEMA debuts always draw a crowd.
The headline is under the hood. A Wegner Motorsports 5.0 liter Coyote V8 breathes through a Whipple supercharger and sends power to the rear wheels through a Bowler six speed manual. Custom headers and a stainless Flowmaster Super 44 system give it the voice to match the punch. Ringbrothers also reworked the chassis with fully independent suspension, Fox RS single adjustable coilovers and massive Brembo brakes so this thing can actually use the power.
Kingpin keeps the Mach 1 silhouette but sharpens it everywhere. The body is widened by 2 inches up front and 3.5 inches at the rear, with an extra 1.5 inches of wheelbase pushed forward for a more planted stance. Carbon fiber shows up on the hood, grille surround, splitter and a rear diffuser, while the deep black paint is set off by green accents on the badges and calipers. The taillights retain the classic triple bar look yet are 3D printed and double as functional vents that let air exit from ducts ahead of the rear wheels.
Details are where Ringbrothers always shine. The engine cover wears a Kingpin script with a tiny chess piece forming the i, mirrored by a matching badge on the tail. Underhood caps carry playful yellow labels, and the cockpit mixes black leather with machined and 3D printed brightwork. There is a crushed carbon look steering wheel with a green 12 o’clock mark, a stripe of black and white fabric through the seat centers, digital gauges and a neatly integrated roll cage for rigidity and safety.
The stance seals it. HRE Vintage Series 517 wheels wear Michelin Pilot Sport 4S rubber, filling the arches just right without stepping on the Mach 1’s timeless lines. It is sinister, purposeful and clearly built to be driven, not just parked under the lights.
Ringbrothers says more than 5,500 hours went into Kingpin, and it shows in the way every surface, seam and switch feels intentional. After a run of headline grabbing projects outside the classic muscle lane, this one feels like a love letter to the car that made so many of us fall for Detroit iron in the first place.
Mike Floyd is a finance executive by trade and a car enthusiast at heart. As a CFO with a keen eye for detail and strategy, Mike brings his analytical mindset to the automotive world, uncovering fresh insights and unique perspectives that go beyond the surface. His passion for cars—especially his favorite, the Porsche 911, fuels his contributions to Automotive Addicts, where he blends a love for performance and design with his professional precision. Whether he’s breaking down industry trends or spotlighting emerging innovations, Mike helps keep the site both sharp and forward-thinking.
