This is what a track-only Lamborghini supercar with a V12 sounds like.

Lamborghini's motorsports division, Squadra Corse, is working on a circuit-specific version of the Aventador that is expected to debut before the end of the year.

The sound is produced by Lamborghini's 6.5-liter V-12 engine. The sound is very raw and reminiscent of the Formula 1 racing cars of the 1980s and 1990s.

There are rumors that this mysterious model will be the last V-12 Lamborghini without electrification or additional powertrain auxiliaries such as a turbocharger. Lamborghini has already confirmed that the Aventador's successor, due around 2022, will be a plug-in hybrid. If so, what a send-off it would be.

In addition to the engine, the car boasts a vented hood, a roof scoop, and a large rear wing, all intended to keep it glued to the track. The Aventador's carbon-fiber passenger cell will remain, but a steel roll cage that houses the engine will be added for added rigidity.

Shifting will be handled by an Extrac racing car-style sequential transmission, and a mechanical self-locking differential will be added to the drivetrain. According to Lamborghini, drivers will be able to adjust the differential to suit different track conditions.

Lamborghini has remained silent on the car's name, but we have heard that the famous SVR name may be revived. The name comes from the Miura SVR, of which only one was built for a customer in 1974. The Miura SVR was essentially a Miura S built to mimic the one-off Miura Iota racing car that was destroyed in a crash in 1972.