Supercars Championship leader Brodie Kostecki has flexed his muscle at Mount Panorama to claim provisional pole for the Bathurst 1000.

After dominating practice, Kostecki backed it up in his Camaro during a chaotic qualifying session in which two red flags were called before any driver could record a lap time.

He clocked 2 minutes and 4.664 seconds to confirm he will be the last to drive in Saturday’s top-10 shootout, which will determine the starting positions for the first five rows of the grid for Sunday’s race.

Kostecki was followed by James Golding in second place, while Anton De Pasquale was the best of the Ford drivers in third.

Three-time champion Shane van Gisbergen saved his qualifying session with a blistering final lap to qualify for the top-10 shootout.

Van Gisbergen appeared destined to finish 11th after being heard complaining about his Camaro over the radio but was able put himself into seventh after the session finished.

While Kostecki had a day to remember, his teammate Will Brown had a nightmare after smashing into a wall just minutes into the session.

Brown slammed his Camaro hard into a tyre wall, and was unable to reverse out, leading to the session being red-flagged.

But the 25-year-old was able to get back out on the track, with mechanics doing a power of work to repair his car.

The session resumed for only four minutes until Declan Fraser made a mistake near a wall, with a red flag waved yet again.

Fraser could not return and will start Sunday’s race from 28th and last.

AAP