With so many variants built over the course of more than a decade of production, it's hard to pinpoint which version is truly the ultimate Lamborghini Diablo. But when it comes to track machinery, it's certainly the GTR.

Built for the precursor of today's Huracan-centered Super Trofeo, the Diablo GTR replaced the previous SV-R and built upon the road-going Diablo GT. It was faster, more powerful, more hardcore, and rarer than any other version. What you see here represents the rare opportunity to make one yours.


The GTR was equipped with a 6.0-liter V12 engine producing a massive 590 horsepower, which may pale in comparison to what today's Raging Bulls kick out, but was the most power Sant'Agata had ever put in one of its supercars up to that point. It also featured an old-school five-speed manual transmission (no flappy paddles here), and was stripped out and fitted with competition-spec components, including carbon-fiber bodywork, plexiglass windows, and a huge rear wing bolted directly to the frame.

Consigned to RM Sotheby's for its upcoming auction in Monterey, this 2000 Lamborghini Diablo GTR is the 19th of 30 made. It was campaigned in the Supertrophy first by the Stéphane Ratel Organisation that today organizes the Blancpain Endurance Series (among others) and then by longtime Lamborghini racing partner Reiter Engineering. The auctioneer estimates its value at US$ 580,000 - US$ 780,000, which could bring it within spitting distance of the '95 Diablo SE30 Jota that RM sold in Monaco last year.