This one-of-one vehicle is a legend—or at least the upgrade hiding under the hood is! That’s because it houses the BMW V10 from the production M5 of the E60 generation (M6), fitted with an Infinitas supercharger kit whose origins go back many years and which turned the tuning world upside down at the time. For many tuners, the vehicle from back then—made especially famous by the Grip episode “Wölfe im Schafspelz” (“Wolves in Sheep’s Clothing”)—was a major milestone. The conversion and the resulting performance were from another planet and prompted countless tuning fans to dive much deeper into the topic of tuning. Incidentally, our tuningblog magazine also came into existence around that time, and of course the supercharged M5 from back then—or at least one of those supercharged vehicles—is still around.

However, while the conversions of the past featured only subtle visual changes for a sense of understatement, the Lumma CLR 730 RS is a completely different story. It really makes a bold visual statement. The reason is the widebody kit produced by vehicle customizer Lumma. This one-off has an Infinitas performance stage under the hood with 730 hp, and according to the manufacturer, this car was once the fastest street-legal sedan in the world. Thanks to the power upgrade, a top speed of exactly 367.4 km/h is possible. The aerodynamic lightweight body kit from Lumma, with many carbon elements, also plays a role in this. Among other parts, the hood, the trunk lid with an integrated hidden lip spoiler, the side skirts, and the fender extensions are made of carbon. Even the kidney grilles are carbon.

The key factor behind the high-speed record is clearly the upgrade to 730 hp via a V10 twin-supercharger setup. And according to our information, all of this even comes with road approval. The 730 hp catapults the sports sedan to 100 km/h in just 4.2 seconds, and the 300 km/h barrier is broken in under 30 seconds. This upgrade is made possible by two special ASA radial compressors, and it also features a custom-made sports exhaust system with 100-cell motorsport catalytic converters and 105 mm stainless steel tailpipes. Infinitas also has even more powerful packages available for the E60. The Hurricane SK3RR boosts the engine to an incredible 950 hp and 900 Nm of torque. Stopping power comes from a 6-piston brake system at the front and a 4-piston system at the rear. The drilled brake discs measure 405 mm at the front and 380 mm at the rear.

In front of the massive brakes sit three-piece 21-inch lightweight alloy wheels from Lumma, with 255/30 tires up front and 295/25 tires at the rear. The suspension is a sport setup that is individually adjustable in compression and rebound at both the front and rear axles, allowing the M5 to be lowered by up to 45 mm. A lot has also changed in the interior. It features a striking mix of carbon, leather, and Alcantara elements, as well as a two-tone leather interior in red and white. Alcantara is used for the headliner, dashboard, seat consoles, and various covers.

In addition, details such as the gear knob, steering wheel, handbrake lever, dashboard trims, parts of the center console, and even the rear shells of the sport seats are decorated with carbon. The vehicle shown in the photos belongs to a Saudi Arabian horsepower enthusiast, who ordered it at the time for an undisclosed price.