Italian boutique firm SGT Automobili unveils the 55-SGT, a carbon-bodied, 740-hp modern tribute to the 155 DTM touring car based entirely on the Alfa Romeo Giulia Quadrifoglio.
Italian boutique manufacturer SGT Automobili has officially unveiled the 55-SGT, an aggressive modern interpretation of one of touring car racing’s most legendary icons: the 1993 Alfa Romeo 155 V6 TI DTM. Making its dynamic public debut at the Milano Monza Motor Show (MIMO) at the iconic Monza circuit, the extreme project honors the historic machine that dominated the German Touring Car Championship under racing driver Nicola Larini.
While the coachbuilt bodywork pays homage to the 1990s silhouette, underneath the retro aesthetic lies the donor chassis and powertrain of a thoroughly modern Alfa Romeo Giulia Quadrifoglio. Interestingly, to remain a completely independent project, SGT Automobili intentionally avoids mentioning the Alfa Romeo brand name in its official press documentation. Instead, the boutique firm utilizes descriptive labels such as “an Italian manufacturer,” “a production-derived platform,” and “a legendary DTM icon.”
Extensive Weight Reduction and Specialized Composite Bodywork
The transformation from a four-door luxury executive sedan into a hardcore performance weapon is severe. SGT Automobili completely replaces nearly every single factory exterior panel with custom body components crafted from a high-tech blend of carbon fiber, Kevlar, and Carbotanium—an advanced, ultra-strong composite material popularized by Pagani in the hypercar universe. To radically increase structural torsional rigidity, the rear doors have been permanently welded shut, structurally turning the sedan platform into a race-derived two-door coupe layout.
Aerodynamic engineering dictated the vehicle’s functional exterior shape. The 55-SGT incorporates an array of adjustable aerodynamic add-ons, oversized functional air intakes, a full flat floor, and a GT3-style rear diffuser. Together, these modifications generate a massive 460 kilograms (1,014 pounds) of downforce at 230 km/h (143 mph) to keep the vehicle stabilized.
Bespoke In-House AWD and Two Distinct Performance Variants
While the standard factory-built Alfa Romeo Giulia Quadrifoglio sends its power exclusively to the rear wheels, SGT engineers developed a custom, fully adjustable all-wheel-drive (AWD) system from scratch. This technical addition directly mirrors the mechanical setup of the original 155 DTM racer. Through a cockpit selector, drivers can actively adjust the torque distribution on the fly—ranging from a balanced 50/50 split all the way to 100 percent rear-wheel drive for an authentic, tail-happy experience.
The vehicle utilizes the Giulia Quadrifoglio’s original 2.9-litre twin-turbocharged V6 engine, paired with a heavily reinforced eight-speed ZF automatic transmission engineered to endure massive torque loads. The model branches into two distinct operational trim configurations:
1. The 55-SGT Stradale (Road-Legal Special)
Weighing in at 1,590 kg (a substantial weight drop from the standard Giulia’s 1,806 kg baseline), the Stradale variant remains fully road-legal. It features adjustable electromagnetic dampers, Brembo brakes, and a custom Sinfonia Corsa exhaust system. Buyers can select between three specialized power mapping profiles delivering 513, 552, or 612 horsepower.
2. The 55-SGT Trofeo (Track-Only Weapon)
Built strictly for closed-circuit track racing, the hardcore Trofeo model drops an extra 100 kg down to a lean 1,490 kg curb weight through billet-machined components and T1000 carbon fiber suspension wishbones. Utilizing a supercharged and modified version of the 2.9L V6, the engine outputs an astonishing 740 horsepower and 800Nm of torque, managed alongside F1-style active Drag Reduction System (DRS) front elements.
A DTM-Inspired Cockpit Environment
The interior layout completely ditches its luxury passenger vehicle heritage. The driver’s bucket seat is moved significantly further rearward to optimize racing weight distribution, while the entire rear bench seat array is completely deleted to make room for a structural chromoly steel roll cage.
The cabin space is heavily dominated by exposed matte carbon fiber trims. The central console configuration is redesigned to replicate a 1990s race cockpit, filled with mechanical tactile toggles and beautifully machined aluminum jet-fighter switches rather than relying on modern touchscreens. Rounding out the retro-modern package is a set of white 20-inch forged center-lock OZ Racing wheels wrapped in high-grip Michelin Pilot Sport Cup 2 tires—developed through direct historical partnerships with original 1993 DTM equipment suppliers.
With order books officially open following its Monza showcase, the 55-SGT enters the market as a highly exclusive collector piece. Pricing reflects its low-volume, coachbuilt carbon engineering, commanding a price tag starting around €500,000 for the opening units—placing it well into modern hypercar territory and far above the retail entry point of a factory Giulia Quadrifoglio.
