Mostert backs up yesterday's pole

The Pepsi Max Crew has locked out the front row again today, with Chaz Mostert taking ARMOR ALL Pole Position for this afternoon's 200km race at the UBET Perth SuperSprint.

Mostert's 57.132sec lap was just 0.155sec quicker than yesterday's double race winner Mark Winterbottom -but this time around he'll be looking for a better jump off the line over his teammate.

"It's absolutely awesome, my engineer Adam DeBorre gave me a fantastic car ... she's a rocket ship," Mostert said, claiming just his second career pole position in V8 Supercars.

"If every round is like Perth I'll be happy!"

Mostert and DeBorre pulled off the Sunday race win last year, and with the FG X Falcons in format Barbagallo Raceway, they will be threatening to take the chequered flag once again.

Meanwhile, there was plenty of chaos at turn six 'the bowl', with Lee Holdsworth spearing off track and gently rolling his Walkinshaw Racing Commodore onto its side early in the session, bringing out the first red flag.

The second was triggered by yesterday's third place man Fabian Coulthard, also speeding off-track. Though Coulthard was able to power on and out of the sand, the red flag had already been called, which team boss Brad Jones was unhappy about. The #14 Freightliner Commodore will start at the back of the grid.

"It's quite distressing, I felt that, no doubt he went off the road, but the amount of [time before they] called the red flag was not enough to get into reverse gear," Jones said.

"Really, really disappointing, we had a fast car with the Freightliner car."

Second row of the grid, behind the Pepsi Max pair, is hometown hero Garth Tander and reigning champ Jamie Whincup, with David Reynolds and Craig Lowndes following.

Click here for full results from the session.

The 200km race will begin at 2.20pm local time.