"Removing the Roof" Is an Understatement: Eccentrica Stripped This Diablo to Its Bones, Then Rebuilt It With 3,500 Parts
At Monterey Car Week, Eccentrica unveiled a V12 Roadster built on the original Lamborghini Diablo—underneath the open-top silhouette lies redesigned suspension, bodywork, and a 550-hp naturally aspirated V12. Only 19 will ever exist.
Chopping the roof off one of the most flamboyant supercars of the 1990s sounds like the laziest way to do a restomod. But the real engineering behind Eccentrica's V12 Roadster is buried in places you can't see—over 3,500 custom-made parts, and swapping the roof is just the start.
The car made its debut on August 14 at The Quail, A Motorsports Gathering by The Peninsula—a regular fixture during Monterey Car Week. The build started life as an original Lamborghini Diablo, with Eccentrica teaming up with Milan-based studio Borromeo De Silva, founded by Emanuel Colombini. The body structure was completely reengineered to support the open cockpit: a steel-and-carbon-fiber hybrid construction, widened track, subtly adjusted proportions, and carbon-fiber reinforcements built into the body to compensate for the structural rigidity the original roof once provided. Aerodynamics were recalculated to account for the exposed cabin, suspension geometry was reworked accordingly, and a custom semi-active damping system was fitted.
Heading up the entire engineering effort is Maurizio Reggiani, former Lamborghini CTO who's worked on the Murciélago, Gallardo, Aventador, and Huracán. His focus here isn't spec-sheet bragging rights—it's feedback. Suspension, steering, brakes, and chassis were all tuned to let the driver feel the road more directly. The engine retains its 5.7-liter naturally aspirated V12 architecture, with recalibrated throttle response and cooling airflow management, putting out 550 horsepower at 7,000 rpm and 600 Nm of torque at 6,500 rpm, with a top speed of 335 km/h (208 mph). Power goes through a six-speed manual gated shifter with three driving modes, steering remains hydraulically assisted, and the brakes have been upgraded to a modern Brembo system—there's assistance, but the whole experience hasn't been turned into a touchscreen operation.
Inside, the cabin combines Connolly leather, Alcantara suede, anodized metal, and exposed carbon fiber, balancing racing aesthetics with bespoke craftsmanship. Every unit is discussed individually with its owner regarding color, materials, and details—rather than picking from a preset options list. Eccentrica is building just 19 units of the V12 Roadster in total.
No turbo, no automated manual, and now no roof either—this car's appeal is arguably built on what's missing rather than what's added. The wedge silhouette is still instantly recognizable as a Diablo, but the widened body, open cockpit, and reworked surfaces make this more than just a restoration job. This marks the roadster follow-up to the original 2024 Eccentrica V12, which had already debuted online—The Quail marks the car's first public physical appearance. Pricing and delivery timeline were not disclosed in the materials provided.
